Variant selection in surface martensite

被引：11

作者：

Baur, Annick P. ^{[1
]}

Cayron, Cyril ^{[1
]}

Loge, Roland E. ^{[1
]}

机构：

[1] Ecole Polytech Fed Lausanne, PX Grp Chair, Lab Thermomech Met, Lausanne, Switzerland

来源：

JOURNAL OF APPLIED CRYSTALLOGRAPHY | 2017年 / 50卷

基金：

瑞士国家科学基金会;

关键词：

surface martensite; variant selection; phenomenological theory of martensite crystallography (PTMC); continuous f.c.c.-b.c.c. distortion; ATOMIC DISPLACEMENTS; LATH MARTENSITE; TRANSFORMATION; AUSTENITE; STEEL; EBSD; DEFORMATION; TEXTURE; MODEL;

D O I：

10.1107/S160057671701398X

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A significant variant selection is reported in isothermal martensite formed on the surface of an Fe-30% Ni sample. The selection phenomenon is modelled using different descriptions of the martensitic phase transformation. In particular, matrices based on the phenomenological theory of martensite crystallography, the Jaswon and Wheeler distortion, and the continuous face centred cubic-body centred cubic distortion are compared. All descriptions allow good predictions of the variant selection. However, the Jaswon and Wheeler distortion and the continuous distortion better account for other features of the surface martensite, such as the {225}(gamma) habit plane and the accommodation mechanism by twin-related variant pairing.

引用

页码：1646 / 1652

页数：7

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