FATIGUE IN CU-ZN-AL SINGLE-CRYSTALS

被引：70

作者：

SADE, M

RAPACIOLI, R

AHLERS, M

机构：

[1] CNEA, Centro Atomico Bariloche,, Bariloche, Argent, CNEA, Centro Atomico Bariloche, Bariloche, Argent

来源：

ACTA METALLURGICA | 1985年 / 33卷 / 03期

关键词：

CRYSTALS; -; Dislocations;

D O I：

10.1016/0001-6160(85)90091-4

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Fatigue properties associated with the beta -18R martensitic transformation are analyzed in Cu-Zn-Al single crystals. The fatigue induced changes are studied by optical, scanning and electron microscopy. It is found that in the interior of the crystals dislocation defect arrays are created which act as local obstacles for the martensitic transformation and lead to the formation of extrusions and holes at the surface, which with increasing numbers of cycles join to form continuous cracks of about 1 mu m width. Crack propagation seems to be little affected by composition or orientation.

引用

页码：487 / 497

页数：11

共 19 条

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