蒋傲雪,游志勇,高晶磊,段状正,乔岗平,张金山,郭凌冰.固溶时效对半固态挤压SiC/AZ91D组织与性能的影响[J].稀有金属材料与工程,2021,50(3):824~828.[Jiang Ao-xue,You Zhi-yong,Gao Jing-lei,Duan Zhuang-zheng,Qiao Gang-ping,Zhang Jin-shan,Guo Lingbing.Effects of solution and aging treatment on the microstructure and properties of semi-solid extruded SiC/AZ91D[J].Rare Metal Materials and Engineering,2021,50(3):824~828.]
固溶时效对半固态挤压SiC/AZ91D组织与性能的影响
投稿时间:2020-03-01  修订日期:2020-04-21
中文关键词:  半固态挤压  SiCp  AZ91D  固溶时效  近液相线保温法
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目)
中文摘要:
      在本次实验研究中,为了获得综合力学性能良好的镁基复合材料,采用近液相线保温法制备10μm 15wt.% SiC/AZ91D半固态坯料进行半固态挤压后得到其复合材料,再经过415℃固溶处理24 h (T4)和进一步220℃时效处理8h (T6)。结果表明,随着固溶时效的进行,晶界处的Mg17Al12相溶解,然后在晶粒中二次析出,并逐渐球化。与T6处理前的15wt.% SiC/AZ91D复合材料相比,经T6处理后其具有良好的综合力学性能,拉伸强度、屈服强度、伸长率和硬度分别达到242MPa、204MPa、2.3%和132.26HV。
Effects of solution and aging treatment on the microstructure and properties of semi-solid extruded SiC/AZ91D
英文关键词:Semi-solid extrusion  SiCp  AZ91D  solution and aging  near-liquidus heat-holding method
英文摘要:
      In the present work, in order to obtain the magnesium matrix composites with good mechanical properties, the semi-solid billet 10μm 15wt.%SiC/AZ91D was prepared using the near-liquidus heat-holding method and later semi-solid extruded to get the magnesium matrix composites. Next, 24h of solution treatment at 415oC (T4) was conducted, followed by 8h of further aging treatment at 220oC (T6). The results show that, with the progress of solution and aging treatments, Mg17Al12 phases at the grain boundary were dissolved, and secondary-precipitated in grains with layered and spheroidized gradually. The magnesium matrix composites 15wt.% SiC/AZ91D after T6 treatment showed better integrated mechanical properties when compared with those before, with tensile strength, yield strength, elongation, and hardness reaching 242MPa, 204MPa, 2.3% and 132.26HV, respectively.
作者单位E-mail
蒋傲雪 太原理工大学材料科学与工程学院 1837864352@qq.com 
游志勇 太原理工大学材料科学与工程学院 youzhiy1486@163.com 
高晶磊 山西华翔集团有限公司 657874018@qq.com 
段状正 太原理工大学材料科学与工程学院 1343011330@qq.com 
乔岗平 太原理工大学材料科学与工程学院 1406904221@qq.com 
张金山 太原理工大学材料科学与工程学院 jinshansx@tom.com 
郭凌冰 山西华翔集团有限公司  
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