TY - JOUR
T1 - [001]取向 Ni 单晶、NiCo、NiCoCr 和NiCoCrFe 单晶合金的力学性能
AU - Ai, Cheng
AU - Zhang, Linyang
AU - Wang, Zhijun
AU - Guo, Min
AU - Huang, Taiwen
AU - Liu, Lin
N1 - Publisher Copyright:
© 2025 Central South University. All rights reserved.
PY - 2025/1
Y1 - 2025/1
N2 - In this paper, the room temperature compression and tensile properties, microhardness and elastic modulus of face center cubic (FCC) structure Ni, NiCo, NiCoCr and NiCoCrFe single crystals with [001] orientation were studied, and the influencing factors of solid solution strengthening degrees of FCC structure multicomponent single crystals were also explored. The results show that the orders of compression yield strength σ0.2, c, yield strength σ0.2, t, tensile strength, microhardness and elastic modulus of Ni, NiCo, NiCoCr and NiCoCrFe single crystals are all NiCoCr>NiCoCrFe>NiCo>Ni. The lattice constants of Ni, NiCo, NiCoCr and NiCoCrFe single crystals increases with increasing number of principal elements, which indicates that the lattice constant is not the major influencing factor of solid solution strengthening degrees of [001] orientation multi-component single crystals. Meanwhile, NiCoCr alloy has the largest atomic radius difference, electronegativity difference and elastic modulus, and the lowest stacking fault energy, i.e. the strengths and hardnesses of FCC structure multi-component alloys with [001] orientation are positively correlated with atomic radius difference, electronegativity difference and elastic modulus, and inversely correlated with stacking fault energy. Moreover, based on lattice friction stress and intrinsic residual strain of FCC structure multi-component single crystals with [001] orientation and polycrystals, a solid solution strengthening model was built.
AB - In this paper, the room temperature compression and tensile properties, microhardness and elastic modulus of face center cubic (FCC) structure Ni, NiCo, NiCoCr and NiCoCrFe single crystals with [001] orientation were studied, and the influencing factors of solid solution strengthening degrees of FCC structure multicomponent single crystals were also explored. The results show that the orders of compression yield strength σ0.2, c, yield strength σ0.2, t, tensile strength, microhardness and elastic modulus of Ni, NiCo, NiCoCr and NiCoCrFe single crystals are all NiCoCr>NiCoCrFe>NiCo>Ni. The lattice constants of Ni, NiCo, NiCoCr and NiCoCrFe single crystals increases with increasing number of principal elements, which indicates that the lattice constant is not the major influencing factor of solid solution strengthening degrees of [001] orientation multi-component single crystals. Meanwhile, NiCoCr alloy has the largest atomic radius difference, electronegativity difference and elastic modulus, and the lowest stacking fault energy, i.e. the strengths and hardnesses of FCC structure multi-component alloys with [001] orientation are positively correlated with atomic radius difference, electronegativity difference and elastic modulus, and inversely correlated with stacking fault energy. Moreover, based on lattice friction stress and intrinsic residual strain of FCC structure multi-component single crystals with [001] orientation and polycrystals, a solid solution strengthening model was built.
KW - atomic radius difference
KW - elastic modulus
KW - multi-component single crystals
KW - solid solution strengthening
KW - solid solution strengthening model
KW - stacking fault energy
UR - http://www.scopus.com/inward/record.url?scp=105006619215&partnerID=8YFLogxK
U2 - 10.11817/j.ysxb.1004.0609.2024-45129
DO - 10.11817/j.ysxb.1004.0609.2024-45129
M3 - 文章
AN - SCOPUS:105006619215
SN - 1004-0609
VL - 35
SP - 167
EP - 180
JO - Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals
JF - Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals
IS - 1
ER -