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Ti-X계 합금의 분말야금 공정 차이에 따른 미세조직변화 분석Analysis of Microstructure Evolution using Different Powder Metallurgy Process in Ti-X Alloy System

Other Titles
Analysis of Microstructure Evolution using Different Powder Metallurgy Process in Ti-X Alloy System
Authors
오명훈권혁곤김두현강민박지환
Issue Date
Jan-2021
Publisher
한국열처리공학회
Keywords
Ti alloy; Powder metallurgy; β Phase; Metal powder injection molding; Microstructure
Citation
열처리공학회지, v.34, no.1, pp.1 - 8
Journal Title
열처리공학회지
Volume
34
Number
1
Start Page
1
End Page
8
URI
https://scholarworks.bwise.kr/kumoh/handle/2020.sw.kumoh/18563
ISSN
1225-1070
Abstract
In this study, Ti-X (X=Mn, Fe, Mo) powder alloys were designed and manufactured by both powder metallurgy (PM) and metal powder injection molding (MIM) process to improve strength and formability compared to CP-Ti powder materials. It was found that the lamellar microstructure consisted of α and β phases was formed in PM-processed alloys. However, MIM-processed alloys showed not the lamellar microstucture but the equiaxed α + β microstructure. It was also revealed that the contents of X component and feedstock were not affected to microstructure evolution. The reason why different microstructure was appeared between PM-processed and MIM-processed alloys is not clear yet, but supposed to be the effect of intersticial elements such as C, H and N derived from feedstock during debinding process of MIM.
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