Determination of α / γ phase boundaries in the Fe-Cr-Ni-Mn quaternary system with a diffusion-multiple method

I. Shuro, S. Kobayashi, T. Nakamura, K. Tsuzaki

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

抄録

The phase relationships between the ferrite phase (α) and the austenite phase (γ) were investigated in the iron-rich comer of the Fe-Cr-Mn-Ni quaternary system at 1000°C. The phase boundary between the α and γ phases was determined using a diffusion-multiple technique. In this technique, three end members, FeCr, FeCrMn and FeCrNi alloys, were coupled inside a metal tube, and then heat treated at 1300°C for 24h to create a microstructural state with a composition gradient of Cr, Ni and Mn within the composition range of the end members. This was followed by long time heat treatment at 1000°C for a period of 240 h to attain equilibrium states between the γ and α phase in the composition range. The phase boundary between the γ single phase field and the γ+α two-phase field was found to slightly shift in a way to expand the γ single phase field when the manganese content was increased from 0 to 5 wt%. The shift of the phase boundary was not obvious at chromium contents above 20 wt% and nickel contents above 8 wt%. These results indicate that manganese is a weak austenitizer at low chromium and nickel contents.

本文言語英語
ホスト出版物のタイトル8th Pacific Rim International Congress on Advanced Materials and Processing 2013, PRICM 8
出版社John Wiley and Sons Inc.
ページ577-582
ページ数6
ISBN(印刷版)9781632660008
DOI
出版ステータス出版済み - 1 1 2013
イベント8th Pacific Rim International Congress on Advanced Materials and Processing 2013, PRICM 8 - Waikoloa, HI, 米国
継続期間: 8 4 20138 9 2013

出版物シリーズ

名前8th Pacific Rim International Congress on Advanced Materials and Processing 2013, PRICM 8
1

その他

その他8th Pacific Rim International Congress on Advanced Materials and Processing 2013, PRICM 8
Country米国
CityWaikoloa, HI
Period8/4/138/9/13

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials

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