重庆大学材料科学与工程学院;国家镁合金材料工程技术研究中心,重庆大学材料科学与工程学院,重庆大学材料科学与工程学院,重庆大学材料科学与工程学院
TG146.2 2
重庆大学中央高校基本科研业务费(CDJZR13130036),国家自然科学基金(51474043)
College of Materials Science and Engineering,Chongqing University;China;National Engineering Research Center for Magnesium Alloys;China,College of Materials Science and Engineering,Chongqing University,College of Materials Science and Engineering,Chongqing University,College of Materials Science and Engineering,Chongqing University
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通过模铸法制备了Mg-10Gd-6Y-1.6Zn-xMn (x=0.4, 0.8, 1.2, 1.6, 2.0, wt.%)系列镁合金,研究了挤压比及Mn含量对Mg-10Gd-6Y-1.6Zn-xMn镁合金显微组织及室温力学性能的影响。研究结果表明：铸态Mg-10Gd-6Y-1.6Zn-xMn合金经热挤压后,合金中的长周期堆垛有序(LPSO)结构由亚稳的18R结构转变为稳定的14H结构。大挤压比能够显著提高合金的室温力学性能,当Mn含量为0.8%时,未时效态抗拉强度达到386MPa,断后延伸率约为10%。
In this study, various amount of Mn elements (x=0.4, 0.8, 1.2, 1.6, 2.0, wt. %) was added to Mg-10Gd-6Y-1.6Zn alloys. We investigated the effect of Mn elements and extrusion ratio on the microstructures and mechanical properties of the alloys. The results show that in the hot extrusion Mg-10Gd-6Y-1.6Zn-xMn alloys, the metastable 18R structure turned into a stable 14H structure of the long period stacking ordered (LPSO) structures. Large extrusion ratio can significantly improve mechanical properties of the alloys at room temperature. When 0.8 wt.% Mn element was added to the alloy, its tensile strength of no-aged status is 386 MPa, and its elongation is about 10%.
引用本文
胡耀波,杨生伟,姚青山,潘复生.挤压比及不同Mn含量对Mg-10Gd-6Y-1.6Zn-xMn镁合金组织性能的影响[J].稀有金属材料与工程,2017,46(1):135~142.[Hu Yaobo, Yang Shengwei, Yao Qingshan, Pan Fusheng. Effects of Extrusion Ratio and Mn Contents on Microstructure and Properties of Mg-10Gd-6Y-1.6Zn-xMn Magnesium Alloy[J]. Rare Metal Materials and Engineering,2017,46(1):135~142.]
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历史
- 收稿日期:2015-02-04
- 最后修改日期:2015-07-20
- 录用日期:2015-10-13
- 在线发布日期: 2017-03-16