Inconel625合金的高温高速热变形行为

材料研究学报

2010, Vol. 24

Issue (3): 239-244

研究论文

本期目录 | 过刊浏览

Inconel625合金的高温高速热变形行为

闫士彩^1,2, 程明², 张士宏^1,2, 张海燕², 张伟红², 张立文¹

1.大连理工大学材料科学与工程学院大连 116024
2.中国科学院金属研究所沈阳 110016

High-temperature High-speed Hot Deformation Behavior of Inconel Alloy 625

YAN Shicai ^1,2, CHENG Ming², ZHANG Shihong^1,2, ZHANG Haiyan², ZHANG Weihong², ZHANG Liwen¹

1.Department of Material Science and Engineering, Dalian University of Technology, Dalian 116024
2.Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016

引用本文:

闫士彩程明张士宏张海燕张伟红张立文. Inconel625合金的高温高速热变形行为[J]. 材料研究学报, 2010, 24(3): 239-244.
, . High-temperature High-speed Hot Deformation Behavior of Inconel Alloy 625[J]. Chin J Mater Res, 2010, 24(3): 239-244.

全文: PDF(1272 KB)

摘要:

对Inconel625合金在1000--1200℃, 应变速率为10--80 s-1条件下的热模拟压缩实验结果进行分析,修正了实验中由于高速变形产生的热效应引起的真应力--真应变曲线上流动应力的误差,通过回归分析建立了Inconel625合金高温高速下的本构模型。
变形后的微观组织分析结果表明, 提高变形速率是细化最终晶粒尺寸的重要途径,但过高的变形速率容易产生残余孪晶。在适当的温度(1050℃)与应变速率(50 s-1)下,合金具有均匀而细小的理想组织。

关键词 ：金属材料，Inconel625合金，高温高速，热变形，动态再结晶

Abstract：

The hot compression test results of Inconel625 alloy have been analyzed and the errors in flow stress caused by thermal effect were corrected. The true stress-strain curves were obtained at the temperature of 1000--1200℃ and the strain rates of 10--80 s-1. Constitutive equation of Inconel625 alloy at high temperature and high speed was established by curvilinear regression method. The microstructure after deformation showed that enhancing strain rate can refine< microstructure well, but there would be twinning remained when the strain rate was overly high. The microstructure would be most homogenous and finest under acceptable temperature (1050℃) and strain rate (50 s-1).

Key words： metallic materials, Inconel alloy 625, high-temperature high-speed, hot deformation, DRX

收稿日期: 2010-01-14

ZTFLH:

TG146

基金资助:

国家自然科学基金50834008资助项目。

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https://www.cjmr.org/CN/ 或 https://www.cjmr.org/CN/Y2010/V24/I3/239

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