FATIGUE FAILURE OF SUS-304 CAUSED BY VIBRATORY CAVITATION EROSION

被引：49

作者：

AHMED, SM

HOKKIRIGAWA, K

OBA, R

机构：

[1] TOHOKU UNIV,INST FLUID SCI,SENDAI,MIYAGI 980,JAPAN

[2] YAMAGATA UNIV,FAC ENGN,YONEZAWA,YAMAGATA 992,JAPAN

来源：

WEAR | 1994年 / 177卷 / 02期

关键词：

CAVITATION EROSION; SUS-304 STAINLESS STEEL; FATIGUE;

D O I：

10.1016/0043-1648(94)90238-0

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The mechanism of cavitation erosion is investigated in detail for SUS 304 stainless steel, a typical erosion-resistant material. Systematic observations of eroded surfaces and dislodged particles show that the predominant failure mode in cavitation erosion is fatigue. Characteristic features of such failures include (1) packets of slip bands, (2) cracks that nucleate at regions of high stress (strain) concentration, (3) cracks that propagate first at an inclination to the surface and then parallel to the surface, and (4) fatigue striations and 'tire tracks' on the rupture surfaces. These last two features are the most indicative of a fatigue process. It is also deduced that massive voids accompanying pressure shock-rings are the most erosive kind of cavitation.

引用

页码：129 / 137

页数：9

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