Lanzhou University of Technology Institutional Repository (LUT_IR)
Effects of solution treatment on microstructure and mechanical properties of thixoformed Mg2Sip/AM60B composite | |
Cheng, F. L.; Chen, T. J.; Qi, Y. S.; Zhang, S. Q.; Yao, P. | |
2015-07-05 | |
发表期刊 | JOURNAL OF ALLOYS AND COMPOUNDS |
ISSN | 0925-8388 |
卷号 | 636页码:48-60 |
摘要 | The studies on heat treatment of thixoformed magnesium based composites are very scarce. To verify the heat treatment behaviors of this kind of materials, the effects of solution treatment on microstructure and mechanical properties of thixoformed Mg(2)Sip/AM60B composite have been investigated. The results indicate that the microstructure evolution includes two stages during solutionizing at 415 degrees C. The first stage (0-2 h) refers to the rapid dissolution of eutectic beta (Mg17Al12) phases and the resulted fast coarsening of both the primary alpha-Mg particles and secondarily primary alpha-Mg grains. The second stage (after 2 h) is regarded as the normal growth of the two kinds of grains through mergence. Due to the adding of Mg2Si phase, the microstructure evolution is slowed. The tensile properties first increase as the time increases from 0 h to 6 h due to the decrease of b phase harmfulness, increased solid solution strengthening and composition homogenization, and then decrease because of the grain coarsening. Correspondingly, the fracture regime changes from intergranular regime in turn to transgranular and intergranular regime. The effects of solution temperature are similar to those with the solution time. After being solutionized at 430 degrees C for 6 h, the tensile properties are up to the highest values, UTS of 277 MPa and elongation of 18.5%, increased by about 20% and 135% respectively compared with those of the as-thixoformed composite. (C) 2015 Elsevier B.V. All rights reserved. |
关键词 | Composite Thixoforming Solution treatment Microstructure Mechanical properties |
DOI | 10.1016/j.jallcom.2015.02.147 |
收录类别 | SCI ; SCIE |
语种 | 英语 |
资助项目 | National Basic Research Program of China[G2010CB635106] ; Program for New Century Excellent Talents in University of China[NCET-10-0023] |
WOS研究方向 | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
WOS类目 | Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
WOS记录号 | WOS:000351836600009 |
出版者 | ELSEVIER SCIENCE SA |
EI入藏号 | 20151000605073 |
EI主题词 | Mechanical properties |
EI分类号 | 537.1 Heat Treatment Processes - 541.2 Aluminum Alloys - 951 Materials Science |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | https://ir.lut.edu.cn/handle/2XXMBERH/34018 |
专题 | 兰州理工大学 省部共建有色金属先进加工与再利用国家重点实验室 |
通讯作者 | Chen, T. J. |
作者单位 | Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China |
第一作者单位 | 省部共建有色金属先进加工与再利用国家重点实验室 |
通讯作者单位 | 省部共建有色金属先进加工与再利用国家重点实验室 |
第一作者的第一单位 | 省部共建有色金属先进加工与再利用国家重点实验室 |
推荐引用方式 GB/T 7714 | Cheng, F. L.,Chen, T. J.,Qi, Y. S.,et al. Effects of solution treatment on microstructure and mechanical properties of thixoformed Mg2Sip/AM60B composite[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2015,636:48-60. |
APA | Cheng, F. L.,Chen, T. J.,Qi, Y. S.,Zhang, S. Q.,&Yao, P..(2015).Effects of solution treatment on microstructure and mechanical properties of thixoformed Mg2Sip/AM60B composite.JOURNAL OF ALLOYS AND COMPOUNDS,636,48-60. |
MLA | Cheng, F. L.,et al."Effects of solution treatment on microstructure and mechanical properties of thixoformed Mg2Sip/AM60B composite".JOURNAL OF ALLOYS AND COMPOUNDS 636(2015):48-60. |
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