Physical constitutive relational model and structure evolution during dynamic recovery of 23Co14Ni12Cr3MoE (A-100) high-strength steel

IF 1.2 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Philosophical Magazine Letters Pub Date : 2022-06-20 DOI:10.1080/09500839.2022.2084570

Jinke Han, Jianlin Li, Yifan Zhang, Haoyu Zhang, Ge Zhou, Lijia Chen

引用次数: 0

Abstract

ABSTRACT The hot compression of A-100 steel at 850–1150°C and strain rate of 0.01–10 s−1 was tested on a Gleeble-3800 thermal simulation machine to determine the corresponding true stress–strain curve. Based on theoretical calculation, the dislocation density factor was introduced into the Avrami equation and thereby a dynamic recovery physical constitutive relational model based on dislocation density theory was established. Then the hot deformation behaviour of A-100 steel was predicted (correlation coefficient R = 0.9964 with an average absolute relative error AARE = 4.0923%). The structures after hot compression were observed by electron backscattered diffraction and found to be lath-shaped martensite and austenite. With an increase of temperature and deceleration of strain rate, the proportions of large-angle boundaries and substructures increased and the softening mechanism became dominated by dynamic recovery.

查看原文本刊更多论文

23Co14Ni12Cr3MoE（A-100）高强度钢动态恢复过程中的物理本构关系模型及组织演变

摘要A-100钢在850–1150°C和0.01–10应变速率下的热压缩 s−1在Gleeble-3800热模拟机上进行测试，以确定相应的真实应力-应变曲线。在理论计算的基础上，将位错密度因子引入Avrami方程，建立了基于位错密度理论的动态恢复物理本构关系模型。然后预测了A-100钢的热变形行为（相关系数R = 0.9964，平均绝对相对误差AARE = 4.0923%）。通过电子背散射衍射观察热压缩后的组织，发现其为板条状马氏体和奥氏体。随着温度的升高和应变速率的降低，大角度边界和亚结构的比例增加，软化机制以动态恢复为主。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Philosophical Magazine Letters 物理-物理：凝聚态物理

CiteScore

2.60

自引率

0.00%

发文量

审稿时长

2.7 months

期刊介绍： Philosophical Magazine Letters is the rapid communications part of the highly respected Philosophical Magazine, which was first published in 1798. Its Editors consider for publication short and timely contributions in the field of condensed matter describing original results, theories and concepts relating to the structure and properties of crystalline materials, ceramics, polymers, glasses, amorphous films, composites and soft matter. Articles emphasizing experimental, theoretical and modelling studies on solids, especially those that interpret behaviour on a microscopic, atomic or electronic scale, are particularly appropriate. Manuscripts are considered on the strict condition that they have been submitted only to Philosophical Magazine Letters , that they have not been published already, and that they are not under consideration for publication elsewhere.