Hot deformation behavior and hot working window of a solid solution strengthened Ni–Cr–Fe-based superalloy

动态再结晶 材料科学 热加工 应变率 流动应力 高温合金 合金 等温过程 微观结构 软化 冶金 加工硬化 变形(气象学) 变形机理 复合材料 热力学 物理
作者
Shuai Gao,Xikou He,Zhengxin Tang,Wenjun Dong,Zhengdong Liu,Hansheng Bao
出处
期刊:Journal of materials research and technology [Elsevier BV]
卷期号:29: 1377-1389
标识
DOI:10.1016/j.jmrt.2024.01.149
摘要

The hot deformation behavior of Ni–Cr–Fe-based ChS57 alloy was investigated by isothermal compression tests in the temperature range of 1000–1200 °C with strain rates covering 0.001–10 s−1. Based upon the hyperbolic sine function and dynamic material model, the constitutive model and processing maps of the alloy were established, the microstructure evolution was systematically analyzed and the optimization of the hot working window was completed. The results indicate that the flow stress increases remarkably with increasing strain rate and decreasing deformation temperature, while the amount of strain required to reach peak stress also gradually increases. The hot deformation process of this alloy is the result of the competition between dynamic softening and work hardening, with a deformation activation energy of 451.34 kJ/mol; dynamic recrystallization (DRX) is the main softening mechanism, while both continuous dynamic recrystallization (CDRX) and discontinuous dynamic recrystallization (DDRX) exist; the low temperatures and medium strain rates (1000–1025 °C, 0.045–0.37s−1) are the instability zone parameters of the alloy when flow localization and deformation bands are the microstructural manifestations of unstable hot working. The optimum hot working window for ChS57 alloy is the medium-low temperatures and low strain rates(1050–1100 °C, 0.001–0.003s−1)and the medium-high temperatures and high rates(1125–1175 °C, 1-10s−1 or 1100 °C/10s−1), where the microstructure appears as randomly oriented and uniformly distributed full DRX grains.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
顾矜应助太阳吖采纳,获得10
刚刚
1秒前
Water关注了科研通微信公众号
1秒前
轻松狗发布了新的文献求助30
1秒前
邢丹丹发布了新的文献求助10
1秒前
2秒前
tongxiner发布了新的文献求助10
2秒前
2秒前
响什么捏应助科研通管家采纳,获得10
2秒前
桐桐应助科研通管家采纳,获得10
2秒前
响什么捏应助科研通管家采纳,获得10
2秒前
大个应助科研通管家采纳,获得10
2秒前
2秒前
丘比特应助科研通管家采纳,获得200
2秒前
2秒前
2秒前
CodeCraft应助科研通管家采纳,获得10
2秒前
3秒前
pan完成签到,获得积分10
3秒前
4秒前
pets完成签到,获得积分10
4秒前
4秒前
4秒前
5秒前
tz完成签到,获得积分10
5秒前
Ezio_sunhao完成签到,获得积分10
5秒前
包子发布了新的文献求助10
6秒前
6秒前
hmx关闭了hmx文献求助
7秒前
8秒前
欣慰妙海完成签到,获得积分10
8秒前
Cici发布了新的文献求助10
8秒前
安静复天发布了新的文献求助10
9秒前
陌疑应助老朱采纳,获得10
9秒前
苏卿应助wd采纳,获得30
9秒前
张三发布了新的文献求助10
9秒前
9秒前
sujustin333发布了新的文献求助10
9秒前
sewage发布了新的文献求助10
9秒前
顾矜应助linmo采纳,获得10
9秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
Cognitive Neuroscience: The Biology of the Mind 1000
Technical Brochure TB 814: LPIT applications in HV gas insulated switchgear 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Picture Books with Same-sex Parented Families: Unintentional Censorship 500
Nucleophilic substitution in azasydnone-modified dinitroanisoles 500
不知道标题是什么 500
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3970048
求助须知:如何正确求助?哪些是违规求助? 3514739
关于积分的说明 11175783
捐赠科研通 3250115
什么是DOI,文献DOI怎么找? 1795198
邀请新用户注册赠送积分活动 875630
科研通“疑难数据库(出版商)”最低求助积分说明 804951