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

Title
Damage mechanism of cavitation erosion in austenite -˃ martensite phase transformable Fe-Cr-C-Mn/Ni alloys
Author
김선진
Keywords
Cavitation erosion; Steel; Surface topography; Fracture
Issue Date
2014-02
Publisher
ELSEVIER SCIENCE SA
Citation
WEAR, v. 310, NO 1-2, Page. 27-32
Abstract
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.
URI
https://www.sciencedirect.com/science/article/abs/pii/S004316481300611Xhttp://hdl.handle.net/20.500.11754/54967
ISSN
0043-1648
DOI
10.1016/j.wear.2013.12.015
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MATERIALS SCIENCE AND ENGINEERING(신소재공학부) > Articles
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