低温挤压制备高塑细晶Zn-6Al合金  

High Ductility Zn-6AI Alloys with Fine-Grained Microstructure Processed by Low Temperature Backward Extrusion

作　　者：孙世能 刘家涛 李笑来 叶国 翁誉铭 卢紫婷 娄东方 Sun Shineng;Liu Jiatao;Li Xiaolai;Ye Guo;Weng Yuming;Lu Ziting;LouDongfang(Institute of Innovative Science and Technology,Shenyang University,Shenyang 110044,China;Chinalco Shenyang Non-Ferrous Metals Processing Co.,Ltd,Shenyang 110108,China;School of Materials Science and Engineering,Northeastern University,Shenyang 110819,China)

机构地区：[1]沈阳大学科技创新研究院,辽宁沈阳110044 [2]中铝沈阳有色金属加工有限公司,辽宁沈阳110108 [3]东北大学材料科学与工程学院,辽宁沈阳110819

出　　处：《稀有金属材料与工程》2021年第7期2263-2267,共5页Rare Metal Materials and Engineering

基　　金：Joint Research Fund Liaoning-Shenyang National Laboratory for Materials Science (2019JH3/30100018);Key R&D Project of Liaoning Province(2020JH210100011);Liaoning Province Natural Science and Foundation of China (2019-MS-236);Innovation and Entrepreneurship Training Program for College Students (202011035017)。

摘　　要：研究了不同挤压温度(350和200℃)对反挤压Zn-6Al合金室温拉伸性能的影响。利用扫描电镜、电子背散射技术以及电子万能试验机对Zn-Al合金的微观组织和力学性能进行了详细的研究。结果表明,由于具有细晶组织、高的施密特因子和无层片状组织,随着挤压温度从350℃降低至200℃,在应变速率为10-3 s-1时,反挤压Zn-6Al合金的伸长率从98%提高至198%。To investigate the effect of different extrusion temperatures(350 and 200 ℃) on the tensile properties of backward extruded Zn-6Al alloys at room temperature, the microstructure and mechanical properties were studied using scanning electron microscope(SEM), electron back-scattered diffraction(EBSD), and electronic universal testing machine. The results show that with the decrease of extrusion temperature from 350 ℃ to 200 ℃, the elongation of backward extruded Zn-6Al alloys increases from 98% to 198% at the strain rate of 10-3 s-1 due to the fine grains, high Schmid factor and non-lamellar structure.

关 键 词：ZN-AL合金 挤压 微观组织 力学性能 变形机制 

分 类 号：TG146.13[一般工业技术—材料科学与工程]