Cao Tieshan   

Associate Professor
Supervisor of Master's Candidates

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Language:English

Paper Publications

Title of Paper:CrMoWV钢的应力松弛行为及其预测

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Date of Publication:2017-05-16

Journal:材料工程

Included Journals:EI、CSCD、Scopus

Volume:45

Issue:5

Page Number:106-111

ISSN No.:1001-4381

Key Words:应力松弛;松弛模型;时序参数法;预测

Abstract:以12Cr-1Mo-1W-0.25V耐热钢550,600℃的8760h松弛实验数据作为对象,研究短时间松弛数据准确而有效预测长时间松弛应力的方法.在采用松弛模型对长时间松弛应力进行直接拟合外推时,发现模型参数与所采用拟合数据的时间长度呈规律性的变化.提出考虑模型参数规律变化的时序参数法,以高精度预测长时间松弛应力.通过对比时序参数法与直接拟合外推法的预测结果,认为时序参数法在用短时间松弛数据预测长时间松弛应力上具有明显优势,预测结果的准确性较直接外推法高.

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