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| 1 | 高熵合金耐蚀性研究的现状及最新进展显示文摘总结了熔炼、激光熔覆、磁控溅射、粉末冶金、电沉积等高熵合金(HEA)制备工艺,归纳了生产工艺对HEA微观结构及耐蚀性的影响。从HEA微观组织结构、成分分布、合金缺陷、析出相等角度阐述了对HEA耐蚀性能的影响机制。讨论了HEA成分设计、相结构与耐蚀性能的相关性,阐明了Ni、Ti、Co、Mo、Cu、Al、B等元素对HEA耐蚀性的影响规律。目前的研究结果表明,适宜含量的Ni、Ti、Co等合金元素,以及析出相组织的均匀化分布,有利于改善HEA的耐蚀性。此外,分别从动力学和热力学的角度分析了磁场对凝固过程及热处理固溶过程中HEA微观结构的调控机制。通过磁场的施加可以促进HEA凝固过程的形核、晶粒细化及均匀分布,再固溶处理更有利于细化晶粒、促进元素间的扩散、改变析出相分布等。指出了HEA耐蚀性研究方面存在的问题及今后努力的方向。 | 龙琼 胡素丽 黎应芬 李娟 龙绍檑 | 2020 | 电镀与涂饰2020，39，4： | 5 |
| 2 | 高熵合金腐蚀性能研究进展显示文摘强耐腐蚀性是部分高熵合金的一个优异特性,但目前相关学者的研究报道并未对高熵合金耐蚀性及其影响因素有一个较综合的阐述。针对目前高熵合金的耐腐蚀性能及其影响因素的研究进展进行了综述,就制备方法与合金成分对高熵合金耐腐蚀性的影响进行了总结,并对高熵合金未来发展提出展望。此外,对高熵合金当前和潜在的应用进行了概述。 | 张敏 张勇 乔珺威 | 2017 | 太原理工大学学报2017，48，3： | 4 |
| 3 | AlCrFeNi2Cux高熵合金组织及性能显示文摘为了分析Cu元素添加对高熵合金显微组织与微观性能的影响,采用真空电弧熔炼炉制备AlCrFeNi2Cux(x=1. 2,1. 4,1. 6,1. 8)高熵合金,并利用扫描电子显微镜、X射线衍射仪、硬度计和压缩试验机对高熵合金的显微组织和力学性能进行测试.结果表明,AlCrFeNi2Cux(x=1. 2,1. 4,1. 6,1. 8)高熵合金主要由简单FCC相(富Fe-Cr相)与BCC相(富Al-Ni相)组成.随着Cu含量的增加,FCC相数量增加,组织中枝晶变得致密,但当x增加到1. 8时,晶粒又变得粗大起来. Cu元素主要富集于枝晶间,随着Cu含量的增加,Cu元素呈现聚集趋势并包裹着树枝晶,当x增至1. 8时,上述偏聚包裹现象更为明显.高熵合金的压缩性能和硬度均随Cu元素的添加呈现先上升后下降的趋势.当x为1. 6时,高熵合金综合性能最佳,其抗压强度、屈服强度、塑性应变量和维氏硬度分别为2 256 MPa、891 MPa、35. 6%和372 HV. | 杨思华 李承泽 张宇峰 曲迎东 | 2019 | 沈阳工业大学学报2019，41，4： | 4 |
| 4 | Al含量对CoFeNi_(2)V_(0.5)高熵合金微观组织和力学性能的影响显示文摘采用真空电弧熔炼炉制备了不同Al含量的Al_(x)CoFeNi_(2)V_(0.5)(x=0~1.0)高熵合金铸锭,并通过X射线衍射仪(XRD)、扫描电子显微镜(SEM)、维氏硬度计、电子万能试验机以及振动样品强磁计(VSM)研究了不同Al含量对AlCoFeNi_(2)V_(0.5)合金微观组织、力学性能及磁性能的影响。结果表明,随着Al含量的增加,铸态Al_(x)CoFeNi_(2)V_(0.5)高熵合金晶体结构发生了由FCC相到FCC+BCC双相的转变,同时合金的压缩强度和硬度也出现了不同程度的提高。当x=0.6时,合金的断后伸长率为20.9%,抗拉强度为1072.1 MPa,表现出了优异的强度和塑性相结合。这是由于Al元素的加入使合金产生了严重的晶格畸变,从而起到固溶强化和细晶强化的作用,同时BCC相的析出起到第二相强化的作用。Al_(x)CoFeNi_(2)V_(0.5)高熵合金均表现出了典型的软磁材料的特征,当x从0增加到1,合金的饱和磁化强度逐渐降低,矫顽力升高。 | 齐兆鑫 梁卉 赵延周 高利 曹志强 | 2021 | 铸造2021，70，9： | 3 |
| 5 | 高熵合金耐腐蚀性能研究进展显示文摘文章介绍了高熵合金块体材料和高熵合金涂层在常温环境中、高温条件下和一些特殊介质中的腐蚀行为,论述了合金元素、热处理、环境因素及制备工艺对高熵合金耐蚀性的影响,并简要分析了高熵合金耐蚀性研究面临的问题。 | 黄海罗 胡云杰 李歆 赵娜娜 王佳乐 崔恩星 高渊 | 2021 | 有色金属加工2021，50，2： | 1 |
| 6 | Strengthening CoCrFeNi high-entropy alloy by Laves and boride phases显示文摘To strengthen the face-centered-cubic(FCC)type CoCrFeNi high-entropy alloy(HEA)by in-situ reinforced phase,(CoCrFeNi)_(100-x)(NbB_(2))_(x)(x=0,2,4,6,8,at.%)alloys were prepared.Phase constitution,microstructure,tensile mechanical properties of the alloys were studied,and the mechanisms were discussed.Results show that the microstructure of all the reinforced alloys consists of the matrix FCC phase,Laves phase,and(Cr_(3)Fe)B_(x) phase.The eutectic structure and(Cr_(3)Fe)B_(x) phases are formed in the interdendritic region,and the eutectic structure is composed of Laves and FCC phases.When x increases from 0 to 8,i.e.,with increase of Nb and B elements,the volume fraction of Laves and(Cr_(3)Fe)B_(x) phases increases gradually from 0 to 5.84%and 8.3%,respectively.Tensile testing results show that the ultimate strength of the alloys increases gradually from 409 MPa to 658 MPa,while the fracture strain decreases from 75%to 1.6%.Fracture analysis shows that the crack originates from the(Cr_(3)Fe)B_(x) phase.The CoCrFeNi alloys are mainly strengthened by the second phase(Laves phase and boride phase). | Xiu-gang Chen Gang Qin Xue-feng Gao Rui-run Chen Qiang Song Hong-zhi Cui | 2022 | China Foundry2022，19，6： | 0 |
| 7 | Microstructure characteristics and mechanical properties of NbMoTiVWSix refractory high-entropy alloys显示文摘Refractory high-entropy alloys are considered as potential structural materials for elevated temperature applications.To obtain refractory high-entropy alloys with high strength,different amounts of Si were added into the NbMoTiVW refractory high-entropy alloys.The effects of Si on the phase constitution,microstructure characteristics and mechanical properties of NbMoTiVWSi_(x) alloys were investigated.Results show that when the addition of Si is 0,0.025 and 0.05(molar ratio),the alloys are consisted of primary BCC and secondary BCC in the intergranular area.When the addition of Si is increased to 0.075 and 0.1,eutectic structure including silicide phase and secondary BCC phase is formed.The primary BCC phase shows dendritic morphology,and is refined by adding Si.The volume fraction of intergranular area is increased from 12.22%to 18.13%when the addition of Si increases from 0 to 0.1.The ultimate compressive strength of the NbMoTiVW alloy is improved from 2,242 MPa to 2,532 MPa.Its yield strength is also improved by the addition of Si,and the yield strength of NbMoTiVWSi_(0.1) reaches maximum of 2,298 MPa.However,the fracture strain of the alloy is decreased from 15.31%to 12.02%.The fracture mechanism of the alloys is changed from mixed fracture of ductile and quasi-cleavage to cleavage fracture with increasing of Si.The strengthening of alloys is attributed to the refinement of primary BCC phase,volume fraction increment of secondary BCC phase,and formation of eutectic structure by addition of Si. | Qin Xu Qi Wang De-zhi Chen Yi-ang Fu Qing-sheng Shi Ya-jun Yin Shu-yan Zhang | 2022 | China Foundry2022，19，6： | 0 |
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