文献类型：期刊文献

中文题名：Low-cycle fatigue life prediction of a polycrystalline nickel-base superalloy using crystal plasticity modelling approach

英文题名：Low-cycle fatigue life prediction of a polycrystalline nickel-base superalloy using crystal plasticity modelling approach

作者：Guang-Jian Yuan[1];Xian-Cheng Zhang[1];Bo Chen[2];Shan-Tung Tu[1];Cheng-Cheng Zhang[3]

机构：[1]Key Laboratory of Pressure Systems and Safety,Ministry of Education,School of Mechanical and Power Engineering,East China University of Science and Technology,Shanghai 200237,China;[2]The Institute for Advanced Manufacturing and Engineering,Faculty of Engineering,Environment and Computing,Coventry University,Coventry CV65LZ,UK;[3]AECC Commercial Aircraft Engine Co.LTD,Shanghai Engineering Research Center for Commercial Aircraft Engine,Shanghai 201108,China

年份：2020

期号：3

起止页码：28

中文期刊名：Journal of Materials Science & Technology

外文期刊名：材料科学技术（英文版）

收录：CSTPCD;;Scopus;CSCD:【CSCD2019_2020】；PubMed;

基金：supported financially by the National Natural Sciene Foundation of China(Nos.51725503 and 51575183);111 Project;Zhang XC is also grateful for the support by Shanghai Pujiang Program;Young Scholar of the Yangtze River Scholars Program;Shanghai Technology Innovation Program of SHEITC(No.CXY-2015-001);financial supports by Coventry University through the Early Career Researcher-Outgoing Mobility Award;the East China University of Science and Technology through 111 Project to facilitate this international research collaboration.

语种：英文

中文关键词：Crystal;plasticity;Fatigue;Finite;element;Life;prediction;Micro-mechanics;Nickel-base;superalloy

外文关键词：Crystal plasticity;Fatigue;Finite element;Life prediction;Micro-mechanics;Nickel-base superalloy

摘要：A crystal plasticity model is developed to predict the cyclic plasticity during the low-cycle fatigue of GH4169 superalloy.Accumulated plastic slip and energy dissipation as fatigue indicator parameters(FIPs)are used to predict fatigue crack initiation and the fatigue life until failure.Results show that fatigue damage is most likely to initiate at triple points and grain boundaries where severe plastic slip and energy dissipation are present.The predicted fatigue life until failure is within the scatter band of factor 2 when compared with experimental data for the total strain amplitudes ranging from 0.8%to 2.4%.Microscopically,the adjacent grain arrangements and their interactions account for the stress concentration.In addition,different sets of grain orientations with the same total grain numbers of 150 were generated using the present model.Results show that different sets have significant influence on the distribution of stresses between each individual grain at the meso-scale,although little effect is found on the macroscopic length-scale.
A crystal plasticity model is developed to predict the cyclic plasticity during the low-cycle fatigue of GH4169 superalloy. Accumulated plastic slip and energy dissipation as fatigue indicator parameters(FIPs) are used to predict fatigue crack initiation and the fatigue life until failure. Results show that fatigue damage is most likely to initiate at triple points and grain boundaries where severe plastic slip and energy dissipation are present. The predicted fatigue life until failure is within the scatter band of factor 2 when compared with experimental data for the total strain amplitudes ranging from 0.8% to 2.4%.Microscopically, the adjacent grain arrangements and their interactions account for the stress concentration. In addition, different sets of grain orientations with the same total grain numbers of 150 were generated using the present model. Results show that different sets have significant influence on the distribution of stresses between each individual grain at the meso-scale, although little effect is found on the macroscopic length-scale.