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| 1 | 浙江天童常绿阔叶林不同演替阶段地表凋落物的C:N:P化学计量特征显示文摘地表凋落物在森林物质循环中起着重要作用,但是目前缺乏对其不同分解层次中碳(C)、氮(N)、磷(P)演替动态的研究。该文以浙江天童常绿阔叶林为研究对象,用空间代替时间序列的方法,通过测定5个演替阶段地表凋落物不同分解层次的凋落物量、有机碳库和氮磷养分库的储量及C:N:P化学计量特征,探讨地表凋落物特征的演替动态。结果表明:1)随着演替的进行,地表凋落物量和有机碳储量呈现下降的趋势。2)在各演替阶段,有机碳含量在各分解层表现出未分解层(L)>半分解层(F)>已分解层(Y)的趋势;有机碳储量均表现为YF>L,且各层氮含量随着演替的进行均趋于升高。4)磷含量在演替中期群落最低,各演替阶段不同分解层的磷含量皆表现为Y>F>L。磷储量的演替趋势不明显。L层磷储量随着演替进行趋于降低。5)随着演替进行,凋落物C:N、C:P和N:P皆趋于下降(p<0.05)。在各分解层之间,C:N和C:P皆表现为Y | 马文济 赵延涛 张晴晴 Ali ARSHAD 史青茹 阎恩荣 | 2014 | 植物生态学报2014，38，8： | 50 |
| 2 | 基于优化SIFT算法的无人机遥感作物影像拼接显示文摘针对作物遥感影像因对比度低所导致的使用尺度不变特征变换算法(scale-invariant feature transform,SIFT)提取特征点数目少,拼接效果不理想的情况,提出了一种基于图像锐化的自适应修改采样步长的非极小值抑制拼接算法,该算法在图像预处理中引入锐化滤波器对平滑后的图像进行卷积,增强图像细节,增加特征点提取数目,同时通过基于尺度的自适应修改采样步长,使图像特征点分布更加均匀,根据低对比度作物遥感影像的成像特性,采用非极小值抑制,提高图像匹配效率。在查找匹配点的过程中,引入最优节点优先算法(best-bin-first,BBF)查找最近邻与次近邻,采用随机抽样一致算法(random sample consensus,RANSAC)优选特征点。通过试验验证,该文改进后的算法相比于标准SIFT算法,在处理低空作物遥感影像时,特征点提取数目平均增加77.5%,特征点匹配对数平均增加15对,对于标准SIFT算法无法匹配的低对比度作物遥感影像,提取到了8对以上的匹配点对,满足了拼接条件。该改进算法相对于标准SIFT算法更适于低对比度遥感影像的拼接。 | 贾银江 徐哲男 苏中滨 靳思雨 Arshad M.Rizwan | 2017 | 农业工程学报2017，33，10： | 25 |
| 3 | Inoculation with Pseudomonas spp. Containing ACC-Deaminase Partially Eliminates the Effects of Drought Stress on Growth,Yield,and Ripening of Pea (Pisum sativum L.)显示文摘Two preselected plant growth promoting rhizobacteria(PGPR) containing 1-aminocyclopropane-1-carboxylate(ACC) -deaminase(EC 4.1.99.4) were used to investigate their potential to ameliorate the effects of drought stress on growth,yield,and ripening of pea(Pisum sativum L.) . Inoculated and uninoculated(control) seeds of pea cultivar 2000 were sown in pots(four seeds pot-1) and placed in a wire house. The plants were exposed to drought stress at different stages of growth(vegetative,flowering,and pod formation) by skipping the respective irrigation. Results revealed that inoculation of peas with PGPR containing ACC-deaminase significantly decreased the 'drought stress imposed effects' on the growth and yield of peas. Exposure of plants to drought stress at vegetative growth stage significantly decreased shoot growth by 41% in the case of uninoculated plants,whereas,by only 18% in the case of inoculated plants compared to nonstressed uninoculated control. Grain yield was decreased when plants were exposed to drought stress at the flowering and pod formation stage,but inoculation resulted in better grain yield(up to 62% and 40% higher,respectively) than the respective uninoculated nonstressed control. Ripening of pods was also delayed in plants inoculated with PGPR,which may imply decreased endogenous ethylene production in inoculated plants. This premise is further supported by the observation that inoculation with PGPR reduced the intensity of classical 'triple' response in etiolated pea seedlings,caused by externally applied ACC. It is very probable that the drought stress induced inhibitory effects of ethylene could be partially or completely eliminated by inoculation with PGPR containing ACC-deaminase. | M. ARSHAD B. SHAHAROONA T. MAHMOOD | 2008 | Pedosphere2008，18，5： | 24 |
| 4 | Crosstalk of liver immune cells and cell death mechanisms in different murine models of liver injury and its clinical relevance显示文摘BACKGROUND: Liver inflammation or hepatitis is a result of pluripotent interactions of cell death molecules, cytokines, chemokines and the resident immune cells collectively called as microenvironment. The interplay of these inflammatory mediators and switching of immune responses during hepatotoxic, viral, drug-induced and immune cell-mediated hepatitis decide the fate of liver pathology. The present review aimed to describe the mechanisms of liver injury, its relevance to human liver pathology and insights for the future therapeutic interventions.DATA SOURCES: The data of mouse hepatic models and relevant human liver diseases presented in this review are systematically collected from Pub Med, Science Direct and the Web of Science databases published in English. RESULTS: The hepatotoxic liver injury in mice induced by the metabolites of CCl4, acetaminophen or alcohol represent necrotic cell death with activation of cytochrome pathway, formation of reactive oxygen species(ROS) and mitochondrial damage. The Fas or TNF-α induced apoptotic liver injury was dependent on activation of caspases, release of cytochrome c and apoptosome formation. The Con A-hepatitis demonstrated the involvement of TRAIL-dependent necrotic/necroptotic cell death with activation of RIPK1/3. The α-Gal Cer-induced liver injury was mediated by TNF-α. The LPS-induced hepatitis involved TNF-α, Fas/Fas L, and perforin/granzyme cell death pathways. The MHV3 or Poly(I:C) induced liver injury was mediated by natural killer cells and TNF-α signaling. The necrotic ischemia-reperfusion liver injury was mediated byhypoxia, ROS, and pro-inflammatory cytokines; however, necroptotic cell death was found in partial hepatectomy. The crucial role of immune cells and cell death mediators in viral hepatitis(HBV, HCV), drug-induced liver injury, non-alcoholic fatty liver disease and alcoholic liver disease in human were discussed.CONCLUSIONS: The mouse animal models of hepatitis provide a parallel approach for the study of human liver pathology. Blocking or stimulating the pathways associated with liver cell death could unveil the novel therapeutic strategies in the management of liver diseases. | Hilal Ahmad Khan Muhammad Zishan Ahmad Junaid Ali Khan Muhammad Imran Arshad | 2017 | Hepatobiliary & Pancreatic Diseases International2017，16，3： | 24 |
| 5 | 沥青基炭纤维的制备及其表征(英文)显示文摘石油沥青在氮气氛中420℃热缩聚7h,制得软化点为295℃的炭纤维前驱体沥青。此前驱体沥青在单孔纺丝器中熔纺获得沥青纤维。将沥青纤维于空气中320℃稳定化处理,最后在氮气流中1000℃炭化制成炭纤维。应用SEM、TGA、FTIR和XRD对石油沥青、前驱体沥青、沥青纤维、预氧化纤维和炭纤维分别进行表征。发现:前驱体沥青中含有质量分数70.5%中间相组分,炭纤维具有径核结构,其最大抗拉强度为650MPa. | Arshad Hussain Wazir Lutfullah Kakakhel | 2009 | 新型炭材料2009，24，1： | 20 |
| 6 | 浙江天童常绿阔叶林演替阶段共有种的树木构型显示文摘树木构型是木本植物为响应光照变化在其空间建造结构上的配置模式和形态体现。研究演替不同阶段共有种构型的变化可以剔除植物谱系的影响,反映植物构型特征与光资源供给性的关系。该研究在浙江宁波天童、南山和北仑3个次生演替序列上选择了5个演替共有种,分4个群落高度层级,对照分析了树高、冠幅深度和面积、枝条伸展方向、基径、叶片盖度和聚集度构型性状随演替的变化,并分析了与冠幅曝光指数的线性关系。结果表明:1)随着演替进行,冠幅厚度和面积、叶片盖度、叶片聚集度和基径逐步增加,但在个别相邻演替阶段增加不显著;2)随着演替进行,植物的垂直枝比例降低,水平枝比例增加;3)演替过程中植物冠幅曝光指数在各层级内都呈现出减小趋势;4)构型性状和植物冠幅曝光指数间存在显著的线性回归关系(p<0.001)。总之,随着常绿阔叶林演替进行,演替共有种构型的变化反映了物种功能类群由阳性先锋植物向耐阴植物的转化,其中,植物对光资源的适应是导致构型变化的主要原因。 | 杨晓东 Ali ARSHAD | 2013 | 植物生态学报2013，37，7： | 17 |
| 7 | 浙江天童木本植物叶片性状空间变异的地统计学分析显示文摘探究叶片性状的空间变异性和环境关联性有助于我们理解植物对环境的适应策略和群落建构机制。该研究以浙江天童5 hm2大型动态样地所有胸径≥1 cm的木本植物为对象,测定了20 253株个体的单叶面积、比叶面积和叶片干物质含量,土壤总氮、总磷、总碳、p H值、体积含水率、容重和腐殖质,以及海拔、坡度和凹凸度等;并用地统计学等方法分析了叶片性状的空间变异性及其与环境因子的相关性。结果表明:1)单叶面积的空间变异最大,比叶面积次之,叶片干物质含量最小。三者在0–5.16 m空间范围内表现出较弱的空间自相关,其半变异函数的最优模型分别为高斯模型、指数模型和指数模型。2)叶片性状空间变异具有方向性,单叶面积空间变异在东北-西南方向上最大,在西北-东南方向上最小;比叶面积和叶片干物质含量的空间变异均在西北-东南方向最大,在东北-西南方向最小。3)单叶面积与地形因子显著负相关(r=–0.12,p<0.000 1);比叶面积与土壤养分显著负相关(r=–0.16,p<0.000 1),叶片干物质含量与土壤养分显著正相关(r=0.13,p<0.000 1)。4)东北-西南方向上,地形因子对单叶面积、比叶面积和叶片干物质含量空间变异的影响大于土壤养分;西北-东南方向上,地形因子对单叶面积空间变异的影响相对较大,而土壤养分对比叶面积和叶片干物质含量空间变异的影响较大。总之,在研究样地内,植物叶片性状随空间距离和方向存在很大的变异性,叶片性状与地形因子、土壤养分的关联性间接表明了环境过滤对群落构建的影响。 | 许洺山 赵延涛 杨晓东 史青茹 周刘丽 张晴晴 Ali ARSHAD 阎恩荣 | 2016 | 植物生态学报2016，40，1： | 13 |
| 8 | 煤焦油沥青制备中间相(英文)显示文摘 煤焦油沥青在微型高压釜中、氮气氛下,通过改变反应温度和停留时间,制取了中间相沥青(MP)。采用FTIR、偏光显微镜、XRD和SEM对MP进行了表征,表明煤焦油沥青经脱氢缩合反应转变成MP。其最佳反应条件为400℃、7h。 | Arshad Hussain Wazir Lutfullah Kaka Khail Ghosia Lutfullah Imtiaz Ahmad | 2003 | 新型炭材料2003，18，4： | 12 |
| 9 | 铝-铜搅拌摩擦焊综述(英文)显示文摘在工程应用中需要通过连接不同的材料制成零部件以满足不同的要求。由于所用材料的力学、热和电性能存在巨大差异,使得这些零部件的制造极具挑战性。搅拌摩擦焊(FSW)能够用于连接异种材料,如铝(Al)和铜(Cu)。关于异种材料的连接,特别是铝-铜,文献来源比较分散,因此,铝-铜搅拌摩擦焊的信息收集比较繁琐。本文综述铝-铜的搅拌摩擦焊,为科研人员提供相关信息。文中全面涵盖和系统总结铝-铜搅拌摩擦焊的各项问题,如工具设计和尺寸、工艺参数以及流程对零件力学性能、微观组织和缺陷形成的影响。此外,还提出和探讨铝-铜搅拌摩擦焊的几个改进工艺。该工作不仅列举前人的主要成果,还提出铝-铜搅拌摩擦焊的发展建议。 | Nidhi SHARMA Zahid A.KHAN Arshad Noor SIDDIQUEE | 2017 | Transactions of Nonferrous Metals Society of China2017，27，10： | 11 |
| 10 | 浙江天童常绿阔叶林演替过程中土壤碳库与植被碳归还的关系显示文摘土壤碳固持量随森林演替显著提高,对减缓全球变暖具有重要意义;但是,演替过程中土壤有机碳库与植被碳归还的关系尚无定论。该研究以浙江天童常绿阔叶林次生演替系列为对象,通过测定前中后3个演替阶段土壤总有机碳(TOC)、可矿化碳(MC)、可溶性有机碳(DOC)和微生物量碳(MBC)3种活性有机碳的含量与储量,植被凋落物年凋落量、地表枯落物现存量和细根年归还量及其碳储量,利用相关分析和多元逐步回归拟合,分析土壤碳库与植被碳输入的关系。结果表明:(1)土壤TOC、MC、DOC和MBC含量随演替进行均显著增加(p<0.05);(2)随演替进行,土壤TOC储量显著增加(p<0.05),而MC、DOC和MBC储量并没有出现一致的变化趋势,其排序为:中期>后期>前期;(3)凋落物年凋落量及其碳储量随演替显著增加(p<0.05),细根年归还量及其碳储量随演替先增后降(p<0.05),而地表枯落物现存量与碳储量显著降低;(4)3种活性有机碳中,MC储量对土壤总有机碳储量解释的贡献率为34.01%(R2=0.388,p<0.05);(5)TOC和活性碳库(MC、DOC、MBC)受到不同碳归还方式的影响,但细根的影响最大(分别为28.2%、50.0%、73.4%和68.8%)。总之,随天童常绿阔叶林演替发生,土壤总有机碳和3种活性有机碳储量显著增加,细根生物量和可矿化碳库储量增加是引起土壤碳固持量增加的主要原因。 | 孙宝伟 杨晓东 张志浩 马文济 Ali ARSHAD 黄海侠 阎恩荣 | 2013 | 植物生态学报2013，37，9： | 10 |
| 11 | Analysis of Earthquake-Triggered Failure Mechanisms of Slopes and Sliding Surfaces显示文摘Earthquake-induced landslides along the Dujiangyan-Yingxiu highway after the Ms 8.0 Wenchuan earthquake in 2008 were investigated.It was found that:(1) slopes were shattered and damaged during the earthquake and open tension cracks formed on the tops of the slopes;(2) the upper parts of slopes collapsed and slid,while the lower parts remained basically intact,indicating that the upper parts of slopes would be damaged more heavily than the lower parts during an earthquake.Large-scale shaking table model tests were conducted to study failure behavior of slopes under the Wenchuan seismic wave,which reproduced the process of deformation and failure of slopes.Tension cracks emerged at the top and upper part of model,while the bottom of the model remained intact,consistent with field investigations.Depth of the tension crack at the top of model is 32 cm,i.e.,3.2 m compared to the prototype natural slope with a height of 14 m when the length scale ratio(proto/model) is 10.Acceleration at the top of the slope was almost twice as large as that at the toe when the measured accelerations on shaking table are 4.85 m/s2 and 6.49 m/s2,which means that seismic force at the top of the slope is twice the magnitude of that at the toe.By use of the dynamic-strength-reduction method,numerical simulation was conducted to explore the process and mechanism of formation of the sliding surface,with other quantified information.The earthquake-induced failure surfaces commonly consist of tension cracks and shear zones.Within 5 m from the top of the slope,the dynamic sliding surface will be about 1 m shallower than the pseudo-static sliding surface in a horizontal direction when the peak ground acceleration(PGA) is 1 m/s2;the dynamic sliding surface will be about 2 m deeper than the pseudo-static sliding surface in a horizontal direction when the PGA is 10 m/s2,and the depths of the dynamic sliding surface and the pseudo-static sliding surface will be almost the same when the PGA is 2 m/s2.Based on these findings,it is suggested that the key point of anti-seismic design,as well as for mitigation of post-earthquake,secondary mountain hazards,is to prevent tension cracks from forming in the upper part of the slope.Therefore,the depth of tension cracks in slope surfaces is the key to reinforcement of slopes.The depth of the sliding surface from the pseudo-static method can be a reference for slope reinforcement mitigation. | WANG Jian YAO Lingkan Arshad Hussain | 2010 | Journal of Mountain Science2010，7，3： | 10 |
| 12 | 浙江天童常绿阔叶林不同演替阶段木本植物的水力结构特征显示文摘水力结构是植物应对环境形成的与水分运输相关的形态策略。探索不同演替阶段和群落不同高度层植物的水力结构特征,有助于理解植物的水分运输和利用策略。该研究以浙江天童常绿阔叶林演替前中后期群落的上层木(占据林冠层的树种)和下层木(灌木层物种)为对象,测定了演替共有种(至少存在于两个演替阶段的物种)和更替种(仅存在于某一演替阶段的物种)的枝边材比导率、叶比导率和胡伯尔值,以及边材疏导面积、末端枝总叶面积和枝条水势,分析植物水力结构在群落上层木和下层木间以及在演替阶段间的差异,及其与枝叶性状的相关关系。结果显示:(1)上层木植物边材比导率和叶比导率显著高于下层木植物(p<0.05);(2)上层木和下层木的边材比导率与叶比导率在演替阶段间均无显著差异(p>0.05);上层木的胡伯尔值在演替阶段间无显著差异,下层木的胡伯尔值随演替显著下降(p<0.05);(3)上层木共有种仅边材比导率随演替进行显著降低(p<0.05),更替种的3个水力结构参数在演替阶段间无显著差异;下层木共有种水力结构参数在演替阶段间无明显差异,更替种仅胡伯尔值随演替减小(p<0.05);(4)植物边材比导率与枝疏导面积和末端枝所支撑的总叶面积显著正相关(p<0.01),胡伯尔值与枝条水势及末端枝总叶面积显著负相关(p<0.01)。以上结果表明:天童常绿阔叶林演替各阶段上层木比下层木具有更大的输水能力和效率;随着演替进行,上层木与下层木的共有种和更替种边材比导率的相反变化表明上层木水力结构的变化可能由微生境变化引起,而下层木水力结构特征的变化可能由物种更替造成。 | 赵延涛 许洺山 张志浩 周刘丽 张晴晴 Ali ARSHAD 宋彦君 阎恩荣 | 2016 | 植物生态学报2016，40，2： | 10 |
| 13 | 浙江普陀山岛森林凋落物动态与微气候的关联性显示文摘森林凋落物动态是森林生态系统过程中的重要组成部分,探索森林凋落物动态特征与微气候间的关系,对深入了解生态系统变化过程运行机理具有重要意义。该研究以浙江普陀山岛典型森林类型枫香(Liquidambar formosana)林、天竺桂(Cinnamomum japonicum)+红楠(Machilus thunbergii)林、马尾松(Pinus massoniana)林、青冈(Cyclobalanopsis glauca)林、台湾蚊母树(Distylium gracile)林为研究对象,探究森林凋落量与微气候的关系。结果表明:1)森林年凋落量介于3.45–5.36t·hm–2·a–1,年凋落量各组分比例表现出不同的组成特征,森林类型与森林月凋落量无关。2)森林月凋落量动态模式主要呈双峰型和三峰型,凋落峰值和风速峰值趋势相一致,主要集中在台风干扰较大的4、7、12月份。3)冗余分析结果表明,影响不同组分月凋落量的微气候因子不同:月总凋落量、叶凋落量、果凋落量和碎屑凋落量的主要控制因素均为空气温度,随空气温度的升高而增大;枝凋落量的主要影响因素是森林上层风速,同样起着显著的正向作用;花凋落量与空气湿度之间呈负相关关系。森林年凋落量各组分所占比例存在差异,森林月凋落量和森林类型无关,主要与空气温度、空气湿度、森林上层风速等微气候因子有关。 | 宋彦君 田文斌 刘翔宇 尹芳 程浚洋 朱丹妮 Ali ARSHAD 阎恩荣 | 2016 | 植物生态学报2016，40，11： | 7 |
| 14 | Significant aspects of carbon capture and storage–A review显示文摘Excessive emission of greenhouse gases into the atmosphere has resulted in a progressive climate change and global warming in the past decades.There have been many approaches developed to reduce the emission of Carbon Dioxide(CO2)into the atmosphere,among which Carbon Capture and Storage(CCS)techniques has been recognized as the most promising method.This paper provides a deeper insight about the CCS technology where CO2 is captured and stored in deep geological formations for stabilization of the earth's temperature.Principles of capturing and storage for a long-term sequestration are also discussed together with the processes,mechanisms and interactions induced by supercritical CO2 upon injection into subsurface geological sites. | Arshad Raza Raoof Gholami Reza Rezaee Vamegh Rasouli Minou Rabiei | 2019 | Petroleum2019，5，4： | 7 |
| 15 | NS1 antigen: A new beam of light in the early diagnosis of dengue infection显示文摘Objective: To evaluate NS1 antigen detection ELISA for the early laboratory diagnosis of dengue virus infection. Methods: The present study was conducted to evaluate the overall positivity of NS1 antigen detection ELISA and its comparison with viral RNA detection via real time PCR and Ig M antibodies detection by ELISA. Results: A total of 1 270 serum samples were tested 86%(1 097/1 270) were detected positive by one or more than one diagnostic test. Out of 1 270, 64%(807/1 270) were positive by NS1 ELISA and 52%(662/1 270), 51%(646/1 270) were positive by real-time RT-PCR and Ig M ELISA respectively.Conclusions: NS1 antigen detection ELISA is highly suitable diagnostic tools and it also has great value for use in outbreak and epidemic situation. | Muhammad Suleman Rani Faryal Muhammad Masroor Alam Salmaan Sharif Shahzad Shaukat Uzma Bashir Aamir Adnan Khurshid Mehar Angez Massab Umair Mian Muhammad Sufian Yasir Arshad Ghulam Mujtaba Syed Sohail Zahoor Zaidi | 2016 | Asian Pacific Journal of Tropical Medicine2016，9，12： | 6 |
| 16 | Synthesis of ion imprinted polymers for selective recognition and separation of rare earth metals显示文摘Lanthanide-ion imprinted polymers(L-IIPs) were synthesized by stoichiometric amounts of rare earth ions and the cavities in the polymers were created for the corresponding lanthanide ions. The maximum sorption capacities were estimated to be 125.3, 126.5, 127.6, 128.2 and 129.1 mg/g for Pr, Nd, Sm, Eu and Gd, respectively at p H 6. In the selectivity study, the L-IIPs exhibited good selectivity to the specific rare earth ions in the presence of coexisting cations. The imprinting results were found to be excellent with some rare earth ions over other competitor rare earth ions with the same charges and close ionic radius. | Mashitah M.Yusoff Nik Rohani Nik Mostapa Md Shaheen Sarkar Tapan Kumar Biswas Md Lutfor Rahman Sazmal Effendi Arshad Mohd Sani Sarjadi Ajaykumar D.Kulkarni | 2017 | Journal of Rare Earths2017，35，2： | 6 |
| 17 | Simulation of Vortex-Induced Vibrations of A Cylinder Using ANSYS CFX显示文摘In this paper, vortex-induced vibrations of a cylinder are simulated by use of ANSYS CFX simulation code. The cylinder is treated as a rigid body and transverse displacements are obtained by use of a one degree of freedom spring damper system. 2-D as well as 3-D analysis is performed using air as the fluid. Reynolds number is varied from 40 to 16000 approx., covering the laminar and turbulent regimes of flow. The experimental results of(Khalak and Williamson, 1997) and other researchers are used for validation purposes. The results obtained are comparable. | Abu Bakar IZHAR Arshad Hussain QURESHI Shahab KHUSHNOOD | 2014 | China Ocean Engineering2014，28，4： | 5 |
| 18 | Thyrotoxicosis Occurring in Secondary Hyperparathyroidism Patients Undergoing Dialysis after Total Parathyroidectomy with Autotransplantation显示文摘 | Zhou Xu Yu-Tuan Wu Xin Li He Wu Hao-Ran Chen Yan-Ling Shi Bilal Arshad Hong-Yuan Li Kai-Nan Wu Ling-Quart Kong | 2017 | Chinese Medical Journal2017，，16： | 5 |
| 19 | Evaluation of Climate Suitability for Rubber (Hevea brasifiensis) Cultivation in Peninsular Malaysia显示文摘 | Adzemi Mat Arshad Mustika Edi Armanto Ahmad Fadhli Adzemi | 2013 | Journal of Environmental Science and Engineering(A)2013，2，5： | 5 |
| 20 | 搅拌摩擦焊清洁制造工艺过程中的缺陷分析(英文)显示文摘清洁生产是制造工艺过程中追求的目标。搅拌摩擦焊是一种比目前最好的传统焊接工艺更好、对环境损害更低的连接技术。搅拌摩擦焊工艺的能量效率高、无耗材、无损耗、无辐射。因此,它是一种能获得优质焊接接头的清洁焊接工艺。但它在焊接过程中会产生缺陷,为使其成为一种可靠的生产工艺,需要对其进行进一步优化。本文作者对搅拌摩擦焊接头的缺陷进行表征。结果表明,缺陷的产生是由于焊件过程的产生的热量不够、搅拌针附近的物质移动不充分、搅拌针后部的材料致密化不够。焊接过程中产生的热量和物料的搅拌程度取决于搅拌摩擦焊的焊接参数。焊接参数选择不当,可导致缺陷的产生。本文所得结果来源于文献和实验。根据各种缺陷的特征,如其可能产生的位置、减少缺陷产生的主要参数等,提出了减少缺陷产生的一些措施。 | Noor Zaman KHAN Zahid A.KHAN Arshad Noor SIDDIQUEE Abdulrahman M.AL-AHMARI Mustufa H.ABIDI | 2017 | Transactions of Nonferrous Metals Society of China2017，27，7： | 4 |
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