Damage mechanism of cavitation erosion in austenite → martensite phase transformable Fe-Cr-C-Mn/Ni alloys

被引：25

作者：

Park, Myung Chul ^{[1
]}

Shin, Gyeong Su ^{[1
]}

Yun, Jae Yong ^{[1
]}

Heo, Ji Haeng ^{[1
]}

Kim, Dae Il ^{[1
]}

Kim, Seon Jin ^{[1
]}

机构：

[1] Hanyang Univ, Div Mat Sci & Engn, Seoul 133791, South Korea

来源：

WEAR | 2014年 / 310卷 / 1-2期

关键词：

Cavitation erosion; Steel; Surface topography; Fracture; STACKING-FAULT ENERGY; RESISTANCE; NI; SHAPE;

D O I：

10.1016/j.wear.2013.12.015

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The damage mechanism of cavitation erosion was investigated for austenite (gamma)-> martensite (alpha') phase transformable Fe-Cr-C-Mn/Ni alloys. In the case of phase transformable alloy, alpha' was formed evenly within the grains. It was assumed that the alpha' phase transformation absorbed the collapse energies of cavities and obstructed the propagation of cracks from grain boundaries into the grain. Consequently, the resistance to cavitation erosion of the grain was enhanced due to the alpha' phase transformation and the damage occurred mainly at grain boundaries. When the alpha' phase transformation did not occur, the onset of cavitation erosion damage was initiated at the shear bands within the grain and at the grain boundaries, simultaneously. Crown Copyright (C) 2013 Published by Elsevier B.V. All rights reserved.

引用

页码：27 / 32

页数：6

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