[1]王冲,郭恩宇,王同敏.基于同步辐射成像技术的镁合金微结构演化研究进展[J].中国材料进展,2021,40(05):339-351.[doi:10.7502/j.issn.1674-3962.202101016]
　WANG Chong,GUO Enyu,WANG Tongmin.Progress in the Investigation of Microstructure Evolution in Mg Alloys Using Synchrotron Radiation Imaging Technique[J].MATERIALS CHINA,2021,40(05):339-351.[doi:10.7502/j.issn.1674-3962.202101016]
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基于同步辐射成像技术的镁合金微结构演化研究进展()
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中国材料进展[ISSN:1674-3962/CN:61-1473/TG]

卷:
40
期数:
2021年第05期
页码:
339-351
栏目:
出版日期:
2021-05-30

文章信息/Info

Title:
Progress in the Investigation of Microstructure Evolution in Mg Alloys Using Synchrotron Radiation Imaging Technique
文章编号:
1674-3962(2021)05-0339-13
作者:
王冲; 郭恩宇; 王同敏
(大连理工大学材料科学与工程学院 辽宁省凝固控制与数字化制备技术重点实验室，辽宁 大连 116024)
Author(s):
WANG Chong;  GUO Enyu;  WANG Tongmin
（Key Laboratory of Solidification Control and Digital Preparation Technology (Liaoning Province), School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, China）
关键词:
镁合金; 同步辐射; 微结构; 力学行为; 腐蚀性能
Keywords:
Mg alloy;  synchrotron radiation;  microstructure;  mechanical behavior;  corrosion property
分类号:
TG146.22
DOI:
10.7502/j.issn.1674-3962.202101016
文献标志码:
A
摘要:
镁合金是当前大规模应用的最轻的金属结构材料，深入阐释镁合金在制备和服役环境下的微结构（如组织、缺陷等）演变机制是获得高性能镁合金制品的重要基础。同步辐射成像技术具备较高的时间和空间分辨率，可对镁合金在制备过程和模拟服役环境下的微结构演变行为实行原位动态观察。综述了同步辐射成像技术在探究镁合金微结构演变机制方面的应用，重点阐述了镁合金在凝固相变过程中的晶体演化行为、复杂加载条件下的裂纹形成与扩展和生物腐蚀环境下的组织演变。总结发现，合金元素及凝固条件的改变影响枝晶晶体形貌；在复杂载荷条件下，镁合金中微裂纹多依附于第二相粒子表面形核并沿着第二相粒子聚集处扩展；生物腐蚀环境下，镁合金表现出良好的生物相容性，通过表面改性等手段可实现对镁合金降解速率的调控。其后，浅析了同步辐射成像技术在这些研究领域的优势和局限性，有望为镁合金及其他众多合金的微结构演化研究提供新的思路。最后，进一步展望了未来同步辐射成像技术在镁合金领域的应用研究。
Abstract:
Mg alloys are the lightest metal structure material for large-scale applications. Elucidating the evolution mechanisms of Mg alloy‘s microstructures during preparation and service condition is critical to obtain high performance magnesium alloy products. Synchrotron radiation imaging technique with high temporal and spatial resolution can realize in-situ dynamic observation of microstructure evolution of alloys during preparation and in simulated service environment. This article reports the recent research progress in the microstructure evolution mechanisms of Mg alloy with the application of synchrotron radiation imaging technique. The crystal evolution behavior of Mg alloys during solidification, the formation and propagation of cracks under complex loading condition and microstructure evolution in biocorrosive environment are discussed. The magnesium alloy dendrite morphology is influenced by alloying elements and solidification conditions. Microcracks are inclined to initiate on the second phase surface and extend along the particles aggregation area. Mg alloys show good biocompatibility under biological corrosion environment, and the degradation rate can be controlled by surface modification. In addition, the advantage and limitation of synchrotron radiation imaging technique in these research are analyzed briefly, providing a new promising way for the investigation of microstructure in Mg alloy and other alloys. In the end, the research trends of synchrotron radiation imaging technique in the study of Mg alloys are prospected.

备注/Memo

备注/Memo:
收稿日期：2021-01-20修回日期：2021-04-14 基金项目：国家重点研发计划项目（2017YFA0403803）；国家自然科学基金项目（52022017，51974058，51927801）第一作者：王冲，男，1993年生，博士研究生通讯作者：郭恩宇，男，1985年生，教授，博士生导师， Email：eyguo@dlut.edu.cn
更新日期/Last Update: 2021-04-30