Lanzhou University of Technology Institutional Repository (LUT_IR)
Investigation of Microstructure of Al-5Ti-0.62C System and Synthesis Mechanism of TiC | |
Ding, Wanwu1,2![]() | |
2020-01-02 | |
发表期刊 | MATERIALS
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卷号 | 13期号:2 |
摘要 | Al-Ti-C master alloys have been widely investigated by various researchers. However, their refining effectiveness is still severely compromised by the preparation process. In this work, the aluminum melt in-situ reaction was carried out to synthesize the Al-5Ti-0.62C, and its refining performance was estimated. The thermodynamics calculation and differential scanning calorimeter experiment were used to investigate the synthesis mechanism of TiC. Quenching experiment was conducted to explore phase and microstructure transformation of the Al-5Ti-0.62C system. The results show that the main phases of Al-5Ti-0.62C master alloys are alpha-Al, Al3Ti, and TiC and it has a positive effect on commercial pure aluminum refining. Commercial pure aluminum is completely refined into the fine equiaxed structure by adding 0.3% Al-5Ti-0.62C master alloy. TiC particles mainly distribute in the grain interior and grain boundaries. The excess Ti came from the dissolution of Al3Ti spreading around TiC and finally forming the Ti-rich zone to promote the nucleation of alpha-Al. The experiments certified that TiC was formed by the reaction between solid C and excess Ti atoms. The main reactions in the Al-5Ti-0.62C system were that solid Al is transferred into liquid Al, and then liquid Al reacted with solid Ti to form the Al3Ti. At last, the release of a lot of heat promotes the formation of TiC which formed by the Ti atoms and solid C. |
关键词 | Al-5Ti-0 62C master alloy quenching experiment grain refining differential scanning calorimeter |
DOI | 10.3390/ma13020310 |
收录类别 | SCI ; SCIE ; EI |
语种 | 英语 |
资助项目 | National Natural Science Foundation of China[51661021][51665033] ; National Natural Science Foundation of Gansu[1606RJZA16][1308RJZA291] ; China Postdoctoral Science Foundation[2019M653896XB] ; Gansu key research and development program[18YF1GA061] |
WOS研究方向 | Materials Science |
WOS类目 | Materials Science, Multidisciplinary |
WOS记录号 | WOS:000515499900057 |
出版者 | MDPI |
EI入藏号 | 20200908227516 |
EI主题词 | Aluminum alloys |
EI分类号 | 537.1 Heat Treatment Processes - 541.1 Aluminum - 541.2 Aluminum Alloys - 542.3 Titanium and Alloys - 641.1 Thermodynamics - 801.4 Physical Chemistry - 804.2 Inorganic Compounds - 944.5 Temperature Measuring Instruments - 944.6 Temperature Measurements |
来源库 | Compendex |
分类代码 | 537.1 Heat Treatment Processes - 541.1 Aluminum - 541.2 Aluminum Alloys - 542.3 Titanium and Alloys - 641.1 Thermodynamics - 801.4 Physical Chemistry - 804.2 Inorganic Compounds - 944.5 Temperature Measuring Instruments - 944.6 Temperature Measurements |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | https://ir.lut.edu.cn/handle/2XXMBERH/64174 |
专题 | 省部共建有色金属先进加工与再利用国家重点实验室 材料科学与工程学院 |
通讯作者 | Ding, Wanwu |
作者单位 | 1.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China; 2.Lanzhou Univ Technol, Sch Mat Sci & Engn, 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; 材料科学与工程学院 |
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; 材料科学与工程学院 |
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 | Ding, Wanwu,Chen, Taili,Zhao, Xiaoyan,et al. Investigation of Microstructure of Al-5Ti-0.62C System and Synthesis Mechanism of TiC[J]. MATERIALS,2020,13(2). |
APA | Ding, Wanwu,Chen, Taili,Zhao, Xiaoyan,Cheng, Yan,Liu, Xiaoxiong,&Gou, Lumin.(2020).Investigation of Microstructure of Al-5Ti-0.62C System and Synthesis Mechanism of TiC.MATERIALS,13(2). |
MLA | Ding, Wanwu,et al."Investigation of Microstructure of Al-5Ti-0.62C System and Synthesis Mechanism of TiC".MATERIALS 13.2(2020). |
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