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Powder Size Influence on Tensile Properties and Porosity for PM Ti2AlNb Alloy Prepared by Hot Isostatic Pressing
Lu, Zheng-Guan; Wu, Jie; Xu, Lei; Yang, Rui
2019-11-01
Source PublicationACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN1006-7191
Volume32Issue:11Pages:1329-1336
AbstractPre-alloyed powder of Ti2AlNb alloy was prepared by electrode induction gas atomization method, and the powder was screened into five kinds of powder size distribution. Fully dense Ti2AlNb alloy was prepared by powder metallurgy (PM) using hot isostatic pressing. The properties of pre-alloyed powder and PM Ti2AlNb alloy were tested. Results show that mean grain size of PM Ti2AlNb alloy is influenced by powder particle size, but particle size has no significant influence on tensile properties. Finer Ti2AlNb powder has low Argon gas bubble ratio and high oxygen content, and poor flowability of finer powder increases the degree of difficulty during degassing. As a result, big pores (> 50 mu m) are observed in PM Ti2AlNb alloy prepared by finer powder and cause plasticity loss of tensile properties. In order to get a better comprehensive properties of PM Ti2AlNb alloy, powder with an average size (similar to 100 mu m) is suggested.
KeywordTi2AlNb alloy Powder metallurgy Powder size distribution Hot isostatic pressing
Indexed BySCI
Language英语
WOS IDWOS:000488930700003
PublisherCHINESE ACAD SCIENCES, INST METAL RESEARCH
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/80673
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Lu, Zheng-Guan,Wu, Jie,Xu, Lei,et al. Powder Size Influence on Tensile Properties and Porosity for PM Ti2AlNb Alloy Prepared by Hot Isostatic Pressing[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2019,32(11):1329-1336.
APA Lu, Zheng-Guan,Wu, Jie,Xu, Lei,&Yang, Rui.(2019).Powder Size Influence on Tensile Properties and Porosity for PM Ti2AlNb Alloy Prepared by Hot Isostatic Pressing.ACTA METALLURGICA SINICA-ENGLISH LETTERS,32(11),1329-1336.
MLA Lu, Zheng-Guan,et al."Powder Size Influence on Tensile Properties and Porosity for PM Ti2AlNb Alloy Prepared by Hot Isostatic Pressing".ACTA METALLURGICA SINICA-ENGLISH LETTERS 32.11(2019):1329-1336.
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