TY - JOUR
T1 - Additive manufacturing of martensitic stainless steel matrix composites with simultaneously enhanced strength-ductility and corrosion resistance
AU - Chen, Wei
AU - Xiao, Bo
AU - Xu, Lianyong
AU - Han, Yongdian
AU - Zhao, Lei
AU - Jing, Hongyang
PY - 2022/4/1
Y1 - 2022/4/1
N2 - Many traditional methods for strengthening martensitic stainless steel (SS) typically come at the sacrifice of ductility. Herein, we report a configuration design of ceramic particles for reinforcing additively manufactured 15-5 PH martensitic SS with an optimized combination of high-strength and impressively larger ductility via the micron-sized TiC addition. High strength is ascribed to grain refinement, Orowan bowing strengthening, and abundant nucleation of nanoscale (Nb,Ti)C precipitates, while high elongation correlates to the reduced oxide inclusion content, martensite/austenite duplex microstructure, and progressive transformation-induced plasticity effect. In addition, severe localized corrosion is completely inhibited. This work shows the great potential of additive manufacturing technology to fabricate Fe-based composites with unique microstructures, low residual stress levels, excellent corrosion resistance, and an exceptional combination of strength and ductility for practical applications.
AB - Many traditional methods for strengthening martensitic stainless steel (SS) typically come at the sacrifice of ductility. Herein, we report a configuration design of ceramic particles for reinforcing additively manufactured 15-5 PH martensitic SS with an optimized combination of high-strength and impressively larger ductility via the micron-sized TiC addition. High strength is ascribed to grain refinement, Orowan bowing strengthening, and abundant nucleation of nanoscale (Nb,Ti)C precipitates, while high elongation correlates to the reduced oxide inclusion content, martensite/austenite duplex microstructure, and progressive transformation-induced plasticity effect. In addition, severe localized corrosion is completely inhibited. This work shows the great potential of additive manufacturing technology to fabricate Fe-based composites with unique microstructures, low residual stress levels, excellent corrosion resistance, and an exceptional combination of strength and ductility for practical applications.
KW - Directed energy deposition
KW - Martensitic stainless steel
KW - Metallic matrix composites
KW - Strength-ductility trade-off
UR - http://www.scopus.com/inward/record.url?scp=85124557801&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85124557801&origin=recordpage
U2 - 10.1016/j.compositesb.2022.109745
DO - 10.1016/j.compositesb.2022.109745
M3 - RGC 21 - Publication in refereed journal
SN - 1359-8368
VL - 234
JO - Composites Part B: Engineering
JF - Composites Part B: Engineering
M1 - 109745
ER -
