Effect of Mechanical Properties on Cavitation Erosion Resistance in γ → α′ Phase Transformable Fe-Cr-C-Mn Alloys

被引:8
作者
Shin, Gyeong Su [1 ]
Yun, Jae Yong [1 ]
Park, Myung Chul [1 ]
Kim, Seon Jin [1 ]
机构
[1] Hanyang Univ, Div Mat Sci & Engn, Seoul 133791, South Korea
关键词
Cavitation erosion; Ferrous alloys; Steel; Stress analysis; Martensitic transformation; STACKING-FAULT ENERGY; SHAPE-MEMORY ALLOYS; STAINLESS-STEEL; EXTENDED NODES; NI; BEHAVIOR; MODEL;
D O I
10.1007/s11249-015-0468-7
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
The effect of mechanical properties on cavitation erosion resistance was investigated for gamma -> alpha ' phase transformable Fe-Cr-C-5Mn alloys. When comparing Fe-8Cr-0.7C-5Mn to Fe-16Cr-0.7C-5Mn, the volume fraction of transformed alpha '-martensite decreased with increasing Cr due to the decrement of the stacking fault energy. In previous study, cavitation erosion resistance increased with increasing volume fraction of transformed martensite. However, the cavitation erosion resistance was improved with increasing Cr. Although the volume fraction of transformed alpha '-martensite decreased with increasing Cr concentration, Cr addition caused increases in compressive strength and elongation. In the case of gamma -> alpha ' phase transformable alloys, it was considered that the strength and fracture strain are more important factors for determining the cavitation erosion resistance than the volume fraction of transformed alpha '-martensite.
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页数:5
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