首页|预轧制路径对ZK60镁合金力学性能的影响

预轧制路径对ZK60镁合金力学性能的影响

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采用低轧制压下量的预冷轧(<3％)来改善轧制ZK60板的力学性能.详细研究轧制路径对力学性能的影响.沿横向的预冷轧和沿法向的预冷轧均可提高屈服强度.但是,在改善综合力学性能方面,沿横向预冷轧比沿法向预冷轧更为有效.预冷轧3％的压下量后,沿横向轧制的样品和沿法向轧制的样品具有相近的拉伸屈服强度(〜270 MPa).但是,前者比后者具有更高的压缩屈服强度、更低的屈服不对称性和更好的韧性.此外,预冷轧还可以增强沉淀硬化效果.但是,时效处理不能进一步提高预冷轧样品的屈服强度.最后,讨论相关的机理.
Effect of pre-rolling path on mechanical properties of rolled ZK60 alloys
Pre-cold rolling with low reductions (<3％) was used to improve the mechanical properties of rolled ZK60 plates. The effects of rolling path on mechanical properties were investigated in detail. Both pre-cold rolling along the transverse direction (TD) and pre-cold rolling along the normal direction (ND) can increase the yield strength. However, pre-cold rolling along the TD is more effective than pre-cold rolling along the ND in improving the comprehensive mechanical properties. After pre-cold rolling to 3％reduction, the sample rolled along the TD and the sample rolled along the ND have similar tensile yield strength (～270 MPa). However, the former has a higher compressive yield strength, lower yield asymmetry and larger toughness than the latter. Moreover, pre-cold rolling can also enhance precipitation hardening effect. However, aging treatment cannot further improve the yield strength of pre-cold rolled samples. Finally, the related mechanism is discussed.

ZK60 alloypre-cold rollingdislocationtwinagingmechanical properties

宋波、杜治文、杨青山、郭宁、郭胜锋、于金程、辛仁龙

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西南大学 材料与能源学院,重庆 400715

重庆科技学院 冶金与材料工程学院,重庆 401331

无锡职业技术学院 机械技术学院,无锡 214121

重庆大学 材料科学与工程学院,重庆 400044

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ZK60合金 预冷轧 错位 孪晶 时效 力学性能

National Natural Science Foundation of ChinaFundamental Research Funds for the Central Universities,ChinaNatural Science Foundation of Jiangsu Higher Education Institutions of ChinaChongqing Municipal Education Commission,China

51601154XDJK2019-B00317KJD430006KJZD-K202001502

2021

10.1016/S1003-6326(21)65580-2

中国有色金属学报(英文版)
中国有色金属学会

中国有色金属学报(英文版)

CSTPCDCSCDSCI
影响因子：1.183
ISSN：1003-6326
年,卷(期)：2021.31(5)
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