IN-SITU HIGH-RESOLUTION ELECTRON-MICROSCOPY OBSERVATION OF ELECTRON-IRRADIATION-INDUCED MARTENSITIC-TRANSFORMATION IN A NI63AL37 ALLOY

被引：11

作者：

MUTO, S ^{[1
]}

SCHRYVERS, D ^{[1
]}

机构：

[1] UNIV ANTWERP RUCA,EMAT,GROENENBORGERLAAN 171,B-2020 ANTWERP,BELGIUM

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 1993年 / 199卷 / 1-2期

关键词：

D O I：

10.1016/0925-8388(93)90422-J

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

An electron-irradiation-induced transformation from cubic beta2 austenite to monoclinic 7M martensite was observed in situ under high resolution electron microscopy conditions in a thin foil of Ni63Al37 beta2 phase (B2, CsCl structure), with the start temperature of the martensitic transformation below but very close to room temperature. The structure of the martensite is consistent with thermoelastic or stress-induced martensite at this composition, including the existence of multiple stacking faults. The transformation is described by a gradual increase in the shear and shuffle amplitudes already existing in the precursor domains. Possible origins of the transformation are discussed.

引用

页码：1 / 6

页数：6

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