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] Chongqing Univ Technol, Sch Mech Engn, Banan 400054, Peoples R China

[2] Hefei Univ Technol, Sch Mat Sci & Engn, Hefei 230009, Peoples R 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：

Molecular dynamics; Ni-based superalloys; Refinement dispersion; Strength and plasticity; MECHANICAL-PROPERTIES; HEAT-TREATMENT; MICROSTRUCTURE; STABILITY;

D O I：

10.1016/j.cplett.2024.141837

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The effect of dispersion distribution of the precipitated phase (gamma' phase) on strength and plasticity at atomic scale in Ni-based superalloys with 15 % volume fraction of gamma' phase and diameters of 10 and 30 nm at roomtemperature were revealed by molecular dynamics simulation. The gamma' 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 gamma' 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.

引用

页数：6

共 50 条

[41] Synchronous improvement of the strength and plasticity of Ni-Co based superalloys
Yang, C. L.
Zhang, Z. J.
Zhang, P.
Cui, C. Y.
Zhang, Z. F.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2018, 736 : 100 - 104
[42] A quantifiable and automated volume fraction characterization technique for secondary and tertiary γ′ precipitates in Ni-based superalloys
Smith, T. M.
Bonacuse, P.
Sosa, J.
Kulis, M.
Evans, L.
MATERIALS CHARACTERIZATION, 2018, 140 : 86 - 94
[43] Atomic partitioning of platinum and ruthenium in advanced single crystal Ni-based superalloys
Tin, S.
Zhang, L.
Ofori, A. P.
Miller, M. K.
2006 BIMW: 2006 BEIJING INTERNATIONAL MATERIALS WEEK, PTS 1-4: MAGNESIUM, 2007, 546-549 : 1187 - +
[44] HIGH-RESOLUTION IMAGING OF SHEARING CONFIGURATIONS OF GAMMA-PRECIPITATES IN NI-BASED SUPERALLOYS
DECAMPS, B
PENISSON, JM
CONDAT, M
GUETAZ, L
MORTON, AJ
SCRIPTA METALLURGICA ET MATERIALIA, 1994, 30 (11): : 1425 - 1430
[45] ON THE PRESENCE OF FINE MATRIX CHANNELS IN NI-BASED SUPERALLOYS AND THEIR EFFECT ON SHEARING PROCESSES OF GAMMA' PRECIPITATES
DECAMPS, B
MORTON, AJ
PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES, 1993, 68 (06): : 1129 - 1149
[46] Dendritic morphology evolution and microhardness enhancement of rapidly solidified Ni-based superalloys
LIU Wei
YAN Na
WANG HaiPeng
Science China(Technological Sciences), 2019, 62 (11) : 1976 - 1986
[47] Dendritic morphology evolution and microhardness enhancement of rapidly solidified Ni-based superalloys
Liu Wei
Yan Na
Wang HaiPeng
SCIENCE CHINA-TECHNOLOGICAL SCIENCES, 2019, 62 (11) : 1976 - 1986
[48] Dendritic morphology evolution and microhardness enhancement of rapidly solidified Ni-based superalloys
LIU Wei
YAN Na
WANG HaiPeng
Science China(Technological Sciences), 2019, (11) : 1976 - 1986
[49] Dendritic morphology evolution and microhardness enhancement of rapidly solidified Ni-based superalloys
Wei Liu
Na Yan
HaiPeng Wang
Science China Technological Sciences, 2019, 62 : 1976 - 1986
[50] A thermodynamically consistent constitutive model for diffusion-assisted plasticity in Ni-based superalloys
Barba, D.
Alabort, E.
Garcia-Gonzalez, D.
Moverare, J. J.
Reed, R. C.
Jerusalem, A.
INTERNATIONAL JOURNAL OF PLASTICITY, 2018, 105 : 74 - 98

← 1 2 3 4 5 →