Unravelling the precipitation evolutions of AZ80 magnesium alloy during non-isothermal and isothermal processes

作     者：Longqing Tang Guowei Bo Fulin Jiang Shiwei Xu Jie Teng Dingfa Fu Hui Zhang Longqing Tang;Guowei Bo;Fulin Jiang;Shiwei Xu;Jie Teng;Dingfa Fu;Hui Zhang

作者机构：College of Materials Science and EngineeringHunan UniversityChangsha 410082China State Key Laboratory of Advanced Design and Manufacturing for Vehicle BodyHunan UniversityChangsha 410082China 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2021年第75卷第16期

页      面：184-195页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：the National Natural Science Foundation of China(52074114) the Hunan Provincial Innovation Foundation for Post graduate(CX20190314) 

主　　题：Magnesium alloy Precipitation Thermal processes In situ electrical resistivity Strengthening 

摘      要：The precipitation evolutions of Mg-Al-Zn alloys play essential roles in their mechanical properties,corrosion performance,formability,plastic deformation mechanisms and texture *** the present work,the precipitation evolutions of AZ80 magnesium alloy during both non-isothermal and isothermal processes were unraveled by utilizing in situ electrical resistivity monitoring,hardness testing,differential scanning calorimetry and microstructural *** results showed that discontinuous precipitation(DP)and continuous precipitation(CP)occurred competitively during non-isothermal and isothermal *** precipitation of dominantβ-Mg17 Al12 phase during non-isothermal processes was highly dependent on the thermal *** isothermal processes,the precipitation behavior of AZ80 magnesium alloy could be considered as the functions of holding temperature and *** lower temperatures,massive DP and CP were gradually formed to equally strengthen the *** higher temperatures,the Ostwald coarsening was characterized in the later stages and indicated to slightly soften the *** time-temperature-precipitation curves and quantitative precipitate evolution were estimated to unravel precipitation characteristics and their strengthening functions.