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http://dx.doi.org/10.12656/jksht.2021.34.1.17

Analysis of Microstructure Evolution using Different Powder Metallurgy Process in Ti-X Alloy System  

Kwon, Hyeok-Gon (MTIG Co.,Ltd)
Kim, Doo-Hyeon (MTIG Co.,Ltd)
Gang, Min (MTIG Co.,Ltd)
Park, Ji-Hwan (MTIG Co.,Ltd)
Oh, Myung-Hoon (School of Materials Science and Engineering, Kumoh National Institute of Technology (KIT))
Publication Information
Journal of the Korean Society for Heat Treatment / v.34, no.1, 2021 , pp. 17-24 More about this Journal
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.
Keywords
Ti alloy; Powder metallurgy; ${\beta}$ Phase; Metal powder injection molding; Microstructure;
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Times Cited By KSCI : 1  (Citation Analysis)
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