定向凝固镁合金组织形貌及力学性能研究进展
Research Progress on Microstructure and Mechanical Properties of Directionally Solidified Magnesium Alloys
靳康帅 1张航 1张旭曌 1连永强 1郭耀威 1房大然 2林小娉2
作者信息
- 1. 东北大学材料科学与工程学院,辽宁沈阳 110819
- 2. 东北大学材料科学与工程学院,辽宁沈阳 110819;东北大学秦皇岛分校资源与材料学院,河北秦皇岛 066004
- 折叠
摘要
利用定向凝固技术调控镁合金晶体取向和组织结构,可以提高镁合金的力学性能.目前对镁合金定向凝固的研究仍处于探索阶段.综述了定向凝固镁合金的组织形貌及胞-枝晶转变特点,并结合课题组的研究讨论了定向凝固镁合金一次晶轴生长取向及其与力学性能相关性.简要介绍了定向凝固镁合金中的长周期堆垛结构相、定向凝固镁合金的耐腐蚀性能以及定向凝固过程数值模拟的研究情况,提出了镁合金定向凝固研究的重点与方向.
Abstract
The crystal orientation and microstructure of magnesium alloys can be adjusted by directional solidification,which can improve mechanical properties of Mg alloys.At present,the research on directional solidification of magnesium alloys is far from enough.In this paper,the microstructure and cell/dendrite transition in directionally solidified Mg alloys was summarized,and the correlation between the growth orientation of the primary dendrite arm and mechanical properties of alloys was discussed.Moreover,the LPSO phase and the corrosion resistance of directionally solidified Mg alloys were summarized,and the research on numerical simulation of directional solidification process was reviewed.On this basis,the research directions in directional solidification of Mg alloys were proposed.
关键词
定向凝固/镁合金/晶体取向/力学性能Key words
directional solidification/magnesium alloy/crystal orientation/mechanical properties引用本文复制引用
基金项目
国家自然科学基金(51775099)
河北省自然科学基金(E2021501019)
河北省自然科学基金(E2022501001)
出版年
2024
国家科技期刊平台
NSTL
万方数据