期刊
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
卷 45A, 期 11, 页码 4875-4881出版社
SPRINGER
DOI: 10.1007/s11661-014-2435-6
关键词
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资金
- Research Grants Council of the Hong Kong Special Administration Region, China [HKU 719712E, HKU712713E]
- University Research Committee of HKU [201211159046]
- NSFC [51301148]
The present work explored the effect of free surface on the stability of individual austenite grains in a duplex stainless steel. It was found that martensitic transformation took place automatically in the retained austenite grain when a free surface was introduced. This is due to the fact that the martensite nucleation energy barrier can be lowered to a thermally surmountable value as the strain energy induced by martensitic transformation is largely lowered when the matrix constraints were removed.
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