Atomic-scale insights into the strength and plasticity enhancement of Ni-based superalloys with refinement dispersion of precipitates

被引：0

作者：

Yin, Yihui ^{[1
]}

Lu, Shiqing ^{[1
]}

Wang, Lusheng ^{[1
]}

Song, Kun ^{[1
]}

Huang, Xia ^{[1
]}

Ding, Jun ^{[1
]}

Yan, Siliang ^{[2
]}

机构：

[1] School of Mechanical Engineering, Chongqing University of Technology, Banan,400054, China

[2] School of Materials Science and Engineering, Hefei University of Technology, Hefei,230009, China

来源：

Chemical Physics Letters | 2025年 / 861卷

基金：

中国国家自然科学基金;

关键词：

Brinell Hardness - Crack propagation - Dispersions - Plasticity - Stress concentration - Superalloys;

D O I：

10.1016/j.cplett.2024.141837

中图分类号：

学科分类号：

摘要：

The effect of dispersion distribution of the precipitated phase (γ’ phase) on strength and plasticity at atomic scale in Ni-based superalloys with 15 % volume fraction of γ’ phase and diameters of 10 and 30 nm at room-temperature were revealed by molecular dynamics simulation. The γ’ phase dispersion refinement can effectively suppress crack propagation, and enhances its strength and plasticity. The increased number of phase boundaries for dislocation nucleation has improved its strength. The small-sized γ’ phase boundaries promote dislocation nucleation and emission to reduce the stress concentration. Additionally, the competitive mechanism ISF and phase transition can further enhance the plasticity. © 2024

引用

共 50 条

[21] Evolution of Precipitates in Ni-based Wrought Superalloys During Hot Working
Zhang Wei
Chen Zishuai
Dong Ruifeng
Li Jian
Zhou Xing
Ma Tianjun
Qu Jinglong
Wang Qingzeng
Gu Yu
RARE METAL MATERIALS AND ENGINEERING, 2023, 52 (09) : 3170 - 3178
[22] EFTEM imaging of ultra fine scaled γ′ precipitates in Ni-based superalloys
Unocic, RR
Sarosi, PM
Mills, MJ
ADVANCED MATERIALS & PROCESSES, 2005, 163 (03): : 50 - 51
[23] Cohesive Strength and Structural Stability of the Ni-Based Superalloys
Razumovskii, Igor
Bokstein, Boris
Logacheva, Alla
Logachev, Ivan
Razumovsky, Mikhail
MATERIALS, 2022, 15 (01)
[24] Atomic size effect of alloying elements on the formation, evolution and strengthening of γ'-Ni3Al precipitates in Ni-based superalloys
Eris, Rasim
Akdeniz, M. Vedat
Mekhrabov, Amdulla O.
INTERMETALLICS, 2019, 109 : 37 - 47
[25] Atomic configurations of planar defects in μ phase in Ni-based superalloys
Cheng, Yongxin
Wang, Guanglei
Liu, Jide
He, Lianlong
SCRIPTA MATERIALIA, 2021, 193 : 27 - 32
[26] Influence of γ′ precipitates on Portevin-Le Chatelier effect of NI-based superalloys
Cai, Yulong
Tian, Chenggang
Fu, Shihua
Han, Guoming
Cui, Chuanyong
Zhang, Qingchuan
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2015, 638 : 314 - 321
[27] Atomic-scale analysis of microchemical changes in a Ni-based superalloy single crystal during creep
Yoshimura, T
Ishikawa, Y
Saito, M
Hidaka, K
Ohashi, T
MATERIALS SCIENCE RESEARCH INTERNATIONAL, 1996, 2 (01): : 13 - 17
[28] Oxide Particle Refinement in 4.5 mass%Al Ni-Based ODS Superalloys
Tang, Qingxin
Ukai, Shigeharu
Oono, Naoko
Hayashi, Shigenari
Leng, Bin
Sugino, Yoshito
Han, Wentuo
Okuda, Takanari
MATERIALS TRANSACTIONS, 2012, 53 (04) : 645 - 651
[29] Modeling dislocation dissociation and cutting of γ' precipitates in Ni-based superalloys by the phase field method
Shen, C
Mills, MJ
Wang, YZ
DEFECT PROPERTIES AND RELATED PHENOMENA IN INTERMETALLIC ALLOYS, 2003, 753 : 309 - 314
[30] On the shearing mechanism of γ′ precipitates by a single (a/6)⟨112⟩ Shockley partial in Ni-based superalloys
Décamps, B
Raujol, S
Coujou, A
Pettinari-Sturmel, F
Clément, N
Locq, D
Caron, P
PHILOSOPHICAL MAGAZINE, 2004, 84 (01): : 91 - 107

← 1 2 3 4 5 →