摘要
简单介绍了Mg-Zn系高强度镁合金的特性和发展历史,着重分析Mg-Zn二元合金组织研究的争论焦点,并阐述了Mg-Zn系多元合金的最新研究进展;讨论了塑性成形和热处理的研究热点:大比率挤压、大塑性变形(SPD)和快速凝固(RS)等塑性变形工艺大大提高了Mg-Zn系合金的力学性能,是扩大应用的关键;双级时效的低温预时效阶段会形成大量G.P.区,为后续时效析出相的析出提供形核核心,进而显著提高合金的力学性能等;最后指出Mg-Zn系合金时效强化机理研究、研发含稀土Mg-Zn系合金、研发新型廉价高强度镁合金和塑性变形工艺是将来研究的重点方向。
The characteristics and development history of Mg-Zn series alloys are briefly presented.Different research perspectives of microstructures of Mg-Zn binary alloy are emphatically introduced and analyzed and research progresses of Mg-Zn multi-element alloys are summarized.Plastic deformation,such as high ratio extrusion,severe plastic deformation and rapid solidification etc.,has greatly increased mechanical properties of Mg-Zn series alloys;a large number of G.P.zones formed during pre-aging stage of two-step aging can significantly improve the mechanical properties of alloys.These plastic forming processes and the two-stage aging treatment are the current hot research areas.Finally,some directions for the future research of Mg-Zn series alloys are suggested.
出处
《重庆大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2010年第11期53-61,共9页
Journal of Chongqing University
基金
国家973重大基础研究项目(2007CB613700)
国家'十一五'科技支撑计划重点项目(2007BAG06B04)
国家杰出青年科学基金(50725413)
重庆市科技攻关项目(CSTC2009AB4008)
中央高校基本科研业务费(CDJXS10132202)
