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| 1 | Deformation bands in fully pearlitic steel during wire drawing显示文摘The deformation of fully pearlitic steels during wire drawing has been investigated for both longitudinal section and transverse section by back-scattered electron imaging(BSEI),electron back-scattered diffraction(EBSD),and transmission electron microscope(TEM).The results show that a large number of deformation bands(DBs)composed of a mixture of kink-like bands and shear-like bands were observed both in the longitudinal section and the traverse section of the drawn wires.The formation of such bands involves two aspects:heterogeneous deformation in the scale of pearlite colonies and instability of ferrite-cementite interfaces due to stress concentration during wire drawing.The development of such bands in fully pearlitic steels dominates the formation of metallographic texture,reduces the pearlite interlamellar spacing and promotes the development of<110>fiber crystalline texture of ferrite matrix during wire drawing. | GUO Ning SONG Bo LUAN BaiFeng CHEN ZhiQian LIU Qing | 2014 | Science China(Technological Sciences)2014，57，4： | 2 |
| 2 | 利用扭转变形制备高体积含量梯度结构材料的研究进展显示文摘向材料内部引入呈梯度分布的晶体缺陷能够有效提高材料的强度,改善材料的韧性。利用扭转变形可以向传统材料内部引入高体积含量梯度晶体缺陷。本文概述了利用扭转变形制备高体积含量梯度结构材料的工艺及研究现状,介绍了扭转梯度纯铜、扭转梯度镁合金以及扭转珠光体钢的微观组织及力学性能,论述了扭转变形对单相及双相材料组织及性能的影响规律及机制。 | 刘聪 张芝民 李小霞 宋波 郭宁 | 2017 | 热加工工艺2017，46，9： | 1 |
| 3 | Characteristic of Near-surface Microstructure and Its Effects on the Torsion Performance of Cold Drawn Pearlitic Steel Wires for Bridge Cables显示文摘The characteristic of near-surface microstructure and its effects on the torsion performance of cold-drawn pearlitic steel wires for bridge cables were investigated by focused ion beam-scanning electron microscope,transmission electron microscopy and differential scanning calorimetry.The samples with similar tensile strength before and after hot-dip galvanizing process are,respectively,characterized as delaminated and non-delaminated in torsion test which indicates that the tensile strength is independent of the toughness value(i e,reduction area and torsion ability).It is interesting to find that there exists submicron granular ferrite on near-surface of the wires,which can be attributed to dislocation rearrangement and sub-grains rotation during cold drawing and hot-dip galvanizing process.And their distribution can suggest homogeneousness of deformation degree to a certain extent:the closer to the surface of their distribution,the more homogeneous deformation of the wires.There is a close relationship between the thermal stability of the cementite layer and distribution of granular ferrite:differential scanning calorimetry(DSC)analysis shows that the sample is accompanied by submicron granular ferrite which is located closer to the surface has higher thermal stability under galvanizing temperature(450°C).A new mechanism of the torsion delamination of pearlitic steel wires is discussed in terms of the thermal stability of the cementite layer and distribution of granular ferrite. | 张帆 MAO Xinping 鲍思前 ZHAO Gang ZHAO Sixin DENG Zhaojun HE Meng HUANG Fangyu QU Xi | 2022 | Journal of Wuhan University of Technology(Materials Science)2022，37，5： | 0 |
| 4 | 0.92%C超细钢丝组织控制及断裂分析显示文摘研究了不同等温铅浴淬火后0.92%C钢丝的组织与性能,并对钢丝断裂机理进行了分析。结果表明,提高奥氏体化温度至980℃、降低铅浴温度至585℃,直径0.84 mm钢丝中珠光体含量高,片层间距细小、均匀,抗拉强度、断面收缩率及硬度均达到最大,且钢丝拥有较强的连续拉拔性能,湿拉过程中的断丝率仅为0.004次/km。 | 陶学伟 王章忠 付洪波 毛向阳 朱帅帅 | 2015 | 金属热处理2015，40，2： | 0 |
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