2Ni6Cr5Al2MoV轴承钢热变形行为及热加工图

doi:10.13251/j.issn.0254-6051.2024.11.002

金属热处理 ›› 2024, Vol. 49 ›› Issue (11): 10-16.DOI: 10.13251/j.issn.0254-6051.2024.11.002

2Ni6Cr5Al2MoV轴承钢热变形行为及热加工图

韩蔚然, 高永亮, 李猛, 朱成席, 王林, 赵岩, 陈达宇

中国兵器科学研究院宁波分院, 浙江宁波 315103

收稿日期:2024-06-02 修回日期:2024-09-05 出版日期:2024-11-25 发布日期:2025-01-09
通讯作者: 高永亮,研究员,博士,E-mail:ylg2002906@126.com
作者简介:韩蔚然(1997—),男,硕士研究生,主要研究方向为金属热变形及热处理,E-mail:hwr_2023@163.com。
基金资助:
内蒙古自治区自然科学基金(2023QN05022)

Hot deformation behavior and hot processing map of 2Ni6Cr5Al2MoV bearing steel

Han Weiran, Gao Yongliang, Li Meng, Zhu Chengxi, Wang Lin, Zhao Yan, Chen Dayu

Ningbo Branch of Chinese Academy of Ordnance Science, Ningbo Zhejiang 315103, China

Received:2024-06-02 Revised:2024-09-05 Online:2024-11-25 Published:2025-01-09

摘要/Abstract

摘要： 采用Gleeble-3800试验机研究了2Ni6Cr5Al2MoV轴承钢在变形温度900~1200 ℃、应变速率0.01~10 s^-1条件下的热变形行为,建立并验证了材料的高温本构方程以及再结晶临界应变模型,基于动态材料模型理论绘制了试验钢在真应变0.6、0.7时的热加工图。结果表明,随着应变速率的升高和变形温度的降低,2Ni6Cr5Al2MoV钢的流变应力增大。适当提高变形温度、降低应变速率有利于该钢动态再结晶的进行。2Ni6Cr5Al2MoV钢能量耗散率η最大值约为0.37,应变量对耗散因子的影响较小。该钢合适的热加工条件为变形温度1100~1200 ℃,应变速率0.01~0.1 s^-1。

关键词: 2Ni6Cr5Al2MoV轴承钢, 热变形行为, 本构方程, 临界应变模型, 热加工图

Abstract: Hot deformation behavior of 2Ni6Cr5Al2MoV bearing steel under deformation temperature of 900-1200 ℃ and strain rate of 0.01-10 s^-1 was studied by Gleeble-3800 simulation machine. The high temperature constitutive equation and recrystallization critical strain model were established and verified. Based on the theory of dynamic material model, the hot processing maps of the steel at true strain of 0.6 and 0.7 were drawn. The results show that the flow stress of the steel increases with the increase of strain rate and the decrease of deformation temperature. Increasing deformation temperature and decreasing strain rate are beneficial to the dynamic recrystallization. The maximum energy dissipation rate η of the steel is about 0.37, and the strain variable has little influence on the dissipation factor. The suitable hot working conditions for the steel are deformation temperature of 1100-1200 ℃ and strain rate of 0.01-0.1 s^-1.

Key words: 2Ni6Cr5Al2MoV bearing steel, hot deformation behavior, constitutive equations, critical strain model, hot processing map

中图分类号:

TG142.7

韩蔚然, 高永亮, 李猛, 朱成席, 王林, 赵岩, 陈达宇. 2Ni6Cr5Al2MoV轴承钢热变形行为及热加工图[J]. 金属热处理, 2024, 49(11): 10-16.

Han Weiran, Gao Yongliang, Li Meng, Zhu Chengxi, Wang Lin, Zhao Yan, Chen Dayu. Hot deformation behavior and hot processing map of 2Ni6Cr5Al2MoV bearing steel[J]. Heat Treatment of Metals, 2024, 49(11): 10-16.

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2Ni6Cr5Al2MoV轴承钢热变形行为及热加工图

Hot deformation behavior and hot processing map of 2Ni6Cr5Al2MoV bearing steel

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