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Dissolution and Precipitation Behaviors of Silicides of Ti-38644 Alloy and Their Effects on Tensile Properties
Ba Hongbo1,2; Dong Liming1; Zhang Zhiqiang1; Wang Haizhong1; Xu Dongsheng1; Yang Rui1
Corresponding AuthorBa Hongbo(bahongbo@sina.com)
2017-06-01
Source PublicationRARE METAL MATERIALS AND ENGINEERING
ISSN1002-185X
Volume46Pages:5-10
AbstractThe dissolution and precipitation behaviors of silicides of Ti-38644 titanium alloy and their influence on the microstructure and tensile properties were investigated. Microstructure characteristics and tensile fracture mode were observed by OM, SEM and TEM. The results show that trace impurity Si promotes the formation of (TiZr)(6)Si-3 silicides. Silicide gradually dissolves when the alloy is solution treated at 700 similar to 950 degrees C. No silicides are observed after the alloy is solution treated at 950 degrees C. The strength of the alloy decreases with the increasing of solution temperature in the range of 800 similar to 950 degrees C due to the dissolution of silicides and the growth of beta grains. When the alloy is solution treated at 1100 degrees C and aged at 700 similar to 900 degrees C for 1 h, silicides precipitate at grain boundaries. No grain boundary silicides are observed after the alloy is aged at 700 degrees Cand 950 degrees C. Grain boundary silicides have little influence on the strength, but the plasticity of alloys increases with the decreasing of the quantity of grain boundary silicides. The fracture mode transforms from brittle fracture to ductile fracture.
KeywordTi-38644 titanium alloy silicide tensile properties fracture mode
Indexed BySCI
Language英语
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000406570100002
PublisherNORTHWEST INST NONFERROUS METAL RESEARCH
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/124821
Collection中国科学院金属研究所
Corresponding AuthorBa Hongbo
Affiliation1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China
2.Liaoning Univ Technol, Jinzhou 121001, Peoples R China
Recommended Citation
GB/T 7714
Ba Hongbo,Dong Liming,Zhang Zhiqiang,et al. Dissolution and Precipitation Behaviors of Silicides of Ti-38644 Alloy and Their Effects on Tensile Properties[J]. RARE METAL MATERIALS AND ENGINEERING,2017,46:5-10.
APA Ba Hongbo,Dong Liming,Zhang Zhiqiang,Wang Haizhong,Xu Dongsheng,&Yang Rui.(2017).Dissolution and Precipitation Behaviors of Silicides of Ti-38644 Alloy and Their Effects on Tensile Properties.RARE METAL MATERIALS AND ENGINEERING,46,5-10.
MLA Ba Hongbo,et al."Dissolution and Precipitation Behaviors of Silicides of Ti-38644 Alloy and Their Effects on Tensile Properties".RARE METAL MATERIALS AND ENGINEERING 46(2017):5-10.
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