Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 834, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2022.142597
Keywords
Directed energy deposition; Martensitic stainless steel; Reversed austenite; Heat treatment
Categories
Funding
- National Natural Science Foundation of China [52025052]
- CityU grant [9360161]
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Additively manufactured 15-5 PH stainless steels with reversed nano-scale austenite dispersed in martensitic matrix exhibit enhanced strength-ductility combination and fatigue resistance, attributed to the crack closure effect caused by transformation-induced volume expansion and the transformation-induced plasticity effect.
Additively manufactured 15-5 PH stainless steels containing reversed nano-scale austenite dispersed in martensitic matrix exhibit improved strength-ductility combination and fatigue resistance. The underlying mechanisms responsible for these improvements are the crack closure effect caused by transformation-induced volume expansion and the transformation-induced plasticity effect.
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