[1]郑明毅,徐超,乔晓光,等.超高强韧Mg-Gd-Y-Zn-Zr变形镁合金研究进展[J].中国材料进展,2020,(1):019-30.[doi:10.7502/j.issn.1674-3962.201908036]
　ZHENG Mingyi,XU Chao. QIAO Xiaoguang,SUN Wanting,et al.Research Progress on UltraHigh Strength and Toughness Mg-Gd-Y-Zn-Zr Wrought Magnesium Alloys[J].MATERIALS CHINA,2020,(1):019-30.[doi:10.7502/j.issn.1674-3962.201908036]
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超高强韧Mg-Gd-Y-Zn-Zr变形镁合金研究进展()
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中国材料进展[ISSN:1674-3962/CN:61-1473/TG]

卷:
期数:
2020年第1期
页码:
019-30
栏目:
出版日期:
2020-01-31

文章信息/Info

Title:
Research Progress on UltraHigh Strength and Toughness Mg-Gd-Y-Zn-Zr Wrought Magnesium Alloys
文章编号:
1674-3962(2020)01-0019-12
作者:
郑明毅; 徐超; 乔晓光; 孙婉婷; 池元清
（哈尔滨工业大学材料科学与工程学院，黑龙江，哈尔滨，150001）
Author(s):
ZHENG Mingyi;  XU Chao. QIAO Xiaoguang;  SUN Wanting;  CHI Yuanqing
(School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China)
关键词:
超高强镁合金; 稀土; 显微组织; 强韧化; 变形镁合金
Keywords:
ultrahigh strength Mg alloys;  rare earth;  wrought Mg alloys;  microstructure;  strengthening and toughening
分类号:
TG146.22
DOI:
10.7502/j.issn.1674-3962.201908036
文献标志码:
A
摘要:
超高强韧镁合金的研发对推广镁合金在高技术领域的应用具有重要意义。镁与稀土均是我国的优势资源，因此在我国发展超高强韧稀土镁合金具有得天独厚的优势，其中Mg-Gd-Y-Zn-Zr系变形镁合金因其接近高强铝合金的超高强度和塑性，近年来受到研究者的广泛关注。综述了超高强韧Mg-Gd-Y-Zn-Zr系变形镁合金的合金成分、常规塑性变形工艺、新型剧烈塑性变形工艺和热处理工艺对该合金显微组织和力学性能的影响规律，以及该超高强韧变形镁合金的显微组织特征和强韧化机理。T5峰时效态超高强韧Mg-8-2Gd-3-8Y-1Zn-0-4Zr（质量分数）挤压合金具有双峰分布的晶粒尺寸“软-硬”复合层片微结构，以及由高密度的基面γ′纳米片状析出相和棱柱面β′纳米析出相形成的近连续网状结构，该挤压合金室温拉伸屈服强度、拉伸强度和断裂延伸率分别为466 MPa、514 MPa和14.5％。介绍了哈尔滨工业大学等单位在超高强韧Mg-Gd-Y-Zn-Zr系变形镁合金的规模化制备和应用方面的研究进展，并展望了Mg-Gd-Y-Zn-Zr系变形镁合金的发展趋势。
Abstract:
The research and development of ultra-high strength and toughness magnesium alloys is of great significance to promote the application of magnesium alloys in high-tech industries. Magnesium and rare earth are the advantageous resources in China. The development of magnesium-rare earth (Mg-RE) alloys with ultra-high strength and toughness has unique advantages in China. Among them, Mg-Gd-Y-Zn-Zr wrought magnesium alloys can obtain ultra-high strength and ductility close to high-strength aluminum alloys, which have received great attention in recent years. In this paper, the effects of alloy composition, conventional plastic deformation processes, novel severe plastic deformation processes and heat treatment processes on the microstructure and mechanical properties of ultra-high strength and toughness Mg-Gd-Y-Zn-Zr wrought magnesium alloys are reviewed. The microstructure features, strengthening and toughening mechanisms of the Mg-Gd-Y-Zn-Zr wrought magnesium alloys with ultra-high strength and toughness are also discussed. The T5 peak-aging treated Mg-8-2Gd-3-8Y-1Zn-0-4Zr (mass fraction) extrusion alloy with ultra-high strength and toughness exhibits a “soft-hard” composite layered microstructure with bimodal grain sizes, and a near-continuous networks formed by precipitation of dense nanoscale basal and prismatic precipitates. The Mg-8-2Gd-3-8Y-1Zn-0-4Zr extrusion alloy obtains a tensile yield strength of 466 MPa, ultimate tensile strength of 514 MPa and elongation to failure of 145%. This paper also introduces the research progress of Harbin Institute of Technology and other groups in the largescale fabrication and application of ultrahigh strength and toughness Mg-Gd-Y-Zn-Zr wrought magnesium alloys, and the research trends on Mg-Gd-Y-Zn-Zr wrought alloys with ultra-high strength and toughness are also prospected.

备注/Memo

备注/Memo:
收稿日期：2019-08-29修回日期：2019-11-26 基金项目：国家重点研发计划项目（2016YFB0301102）；科技部“973”计划项目（2013CB632200）；科技部国际科技合作专题项目（2010DFB50210）第一作者：郑明毅，男，1969年生，教授，博士生导师， Email: zhengmingyi_hit@126.com
更新日期/Last Update: 2020-01-06