Fretting fatigue experiment and polycrystal plasticity simulation in Ni-based superalloy at room temperature and 650 °C

被引：8

作者：

Fang, Jianwen ^{[1
]}

Han, Qinan ^{[1
]}

Cui, Haitao ^{[1
]}

Lei, Xusheng ^{[1
,2
]}

Yan, Xiaodong ^{[1
]}

Mu, Qinqin ^{[3
]}

Xu, Jian ^{[3
]}

Shi, Huiji ^{[4
]}

机构：

[1] Nanjing Univ Aeronaut & Astronaut, Coll Energy & Power Engn, Nanjing 210016, Peoples R China

[2] First Aircraft Inst, AVIC, Xian 710089, Peoples R China

[3] Aircraft Strength Res Inst China, Xian 710065, Peoples R China

[4] Tsinghua Univ, Dept Engn Mech, AML, Beijing 100084, Peoples R China

来源：

INTERNATIONAL JOURNAL OF FATIGUE | 2023年 / 168卷

基金：

中国国家自然科学基金;

关键词：

Fretting fatigue; EBSD; Polycrystal plasticity simulation; Ni-based superalloy; ANGLE GRAIN-BOUNDARIES; SITU SEM OBSERVATION; EBSD ANALYSIS; MICROSTRUCTURE EVOLUTION; LOCALIZED DEFORMATION; RATE DEPENDENCE; CRACK FORMATION; DISLOCATIONS; CRYSTALS; BEHAVIOR;

D O I：

10.1016/j.ijfatigue.2022.107460

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The fretting fatigue behavior of Ni-based polycrystal superalloys at room temperature and 650 degrees C was studied by fretting fatigue experiment, electron back-scattered diffraction (EBSD) and polycrystal plasticity simulation. The life results and fracture morphology were obtained. The grain morphology, misorientation parameters, high angle and low-angle grain boundary and geometrically necessary dislocation (GND) density were analyzed by EBSD. A polycrystal plasticity fretting fatigue simulation framework considering microstructure was developed. The effects of grain boundary, contact edge and temperature on stress and dominant slip distribution were analyzed, and the evolution of the dominant slip system in the loading process was discussed.

引用

页数：12

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