自然科学版 英文版
自然科学版 英文版
自然科学版 英文版

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中南大学学报(英文版)

Journal of Central South University

Vol. 12    No. 4    August 2005

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Structural evolution and stability of
mechanically alloyed Fe-Ni nanocrystalline
CHEN Zi(陈 资), LIU Qi-zheng(刘奇正), MENG Qing-ping(孟庆平),
RONG Yong-hua(戎咏华)

School of Materials Science and Engineering, Shanghai Jiaotong University, Shanghai 200030, China

Abstract:The structural evolution and stability of Fe100-xNix(x=10, 20, 35, 50) alloys prepared by mechanical alloying were investigated through X-ray diffraction analysis and transmission electron microscopy. The intrinsic conditions of preparation determining phase stability in nanocrystalline were clarified. After being milled for 120 h,the powders of Fe90Ni10and Fe80Ni20 consist of a single α(bcc) phase, Fe30Ni30 powders are a single γ(fcc), and for Fe65Ni35 powders there is co-existence ofαandγphases. The as-milled Fe80Ni20 powders annealed at 680℃exhibits the stability of high-temperatureγphase at room temperature, which is consistent with the theoretical prediction.

 

Key words: mechanical alloying; Fe-Ni nanocrystalline; structural evolution; phase stability; martensitic transfor-mation

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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