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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
- 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
- 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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