A non-isothermal creep fracture prediction method of DS superalloy considering microstructural damage

Shuning Gu; Hangshan Gao; Jundong Wang; Chengjiang Zhang; Zhixun Wen; Ai Xing; Zhufeng Yue

doi:10.1016/j.engfracmech.2023.109350

A non-isothermal creep fracture prediction method of DS superalloy considering microstructural damage

Shuning Gu, Hangshan Gao, Jundong Wang, Chengjiang Zhang, Zhixun Wen, Ai Xing, Zhufeng Yue

力学与土木建筑学院

科研成果: 期刊稿件 › 文章 › 同行评审

5 引用（Scopus）

摘要

Nonisothermal service conditions are one of the main abnormal failure modes of aero-engines. The creep tests of a Ni-based directionally solidified superalloy under nonisothermal creep conditions (T_over = 980 °C, 1000 °C and 1020 °C) and constant load (σ = 227 MPa) were analyzed by SEM. According to the creep tests, we calculate the key creep parameters. By studying tests interrupted at different stages of creep, the microstructure evolution law is obtained. Based on the above research, an improved constitutive model is proposed. The creep behavior under different T_over is simulated and calculated. The simulation results are in good agreement with the experimental results.

源语言	英语
文章编号	109350
期刊	Engineering Fracture Mechanics
卷	287
DOI	https://doi.org/10.1016/j.engfracmech.2023.109350
出版状态	已出版 - 14 7月 2023

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title = "A non-isothermal creep fracture prediction method of DS superalloy considering microstructural damage",

abstract = "Nonisothermal service conditions are one of the main abnormal failure modes of aero-engines. The creep tests of a Ni-based directionally solidified superalloy under nonisothermal creep conditions (Tover = 980 °C, 1000 °C and 1020 °C) and constant load (σ = 227 MPa) were analyzed by SEM. According to the creep tests, we calculate the key creep parameters. By studying tests interrupted at different stages of creep, the microstructure evolution law is obtained. Based on the above research, an improved constitutive model is proposed. The creep behavior under different Tover is simulated and calculated. The simulation results are in good agreement with the experimental results.",

keywords = "Fatigue crack growth, Initial flaw size, Plastic zone size, Variable amplitude loading",

author = "Shuning Gu and Hangshan Gao and Jundong Wang and Chengjiang Zhang and Zhixun Wen and Ai Xing and Zhufeng Yue",

note = "Publisher Copyright: {\textcopyright} 2023 Elsevier Ltd",

year = "2023",

month = jul,

day = "14",

doi = "10.1016/j.engfracmech.2023.109350",

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T1 - A non-isothermal creep fracture prediction method of DS superalloy considering microstructural damage

AU - Gu, Shuning

AU - Gao, Hangshan

AU - Wang, Jundong

AU - Zhang, Chengjiang

AU - Wen, Zhixun

AU - Xing, Ai

AU - Yue, Zhufeng

PY - 2023/7/14

Y1 - 2023/7/14

N2 - Nonisothermal service conditions are one of the main abnormal failure modes of aero-engines. The creep tests of a Ni-based directionally solidified superalloy under nonisothermal creep conditions (Tover = 980 °C, 1000 °C and 1020 °C) and constant load (σ = 227 MPa) were analyzed by SEM. According to the creep tests, we calculate the key creep parameters. By studying tests interrupted at different stages of creep, the microstructure evolution law is obtained. Based on the above research, an improved constitutive model is proposed. The creep behavior under different Tover is simulated and calculated. The simulation results are in good agreement with the experimental results.

AB - Nonisothermal service conditions are one of the main abnormal failure modes of aero-engines. The creep tests of a Ni-based directionally solidified superalloy under nonisothermal creep conditions (Tover = 980 °C, 1000 °C and 1020 °C) and constant load (σ = 227 MPa) were analyzed by SEM. According to the creep tests, we calculate the key creep parameters. By studying tests interrupted at different stages of creep, the microstructure evolution law is obtained. Based on the above research, an improved constitutive model is proposed. The creep behavior under different Tover is simulated and calculated. The simulation results are in good agreement with the experimental results.

KW - Fatigue crack growth

KW - Initial flaw size

KW - Plastic zone size

KW - Variable amplitude loading

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DO - 10.1016/j.engfracmech.2023.109350

M3 - 文章

AN - SCOPUS:85160022639

SN - 0013-7944

VL - 287

JO - Engineering Fracture Mechanics

JF - Engineering Fracture Mechanics

M1 - 109350

ER -

A non-isothermal creep fracture prediction method of DS superalloy considering microstructural damage

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