23Co13Ni11Cr3Mo超高强钢的高温变形行为

材料研究学报

2011, Vol. 25

Issue (3): 283-288

研究论文

本期目录 | 过刊浏览

23Co13Ni11Cr3Mo超高强钢的高温变形行为

黄始全¹, 易幼平¹, 李蓬川²

1.中南大学机电工程学院长沙 410083
2.中国第二重型机械集团公司德阳 618000

High Temperature Deformation Behavior of 23Co13Ni11Cr3Mo Ultrahigh Strength Steel

HUANG Shiquan¹, YI Youping¹, LI Pengchuan²

1.School of Mechanical and Electrical Engineering, Central South University, Changsha 410083
2.China National Erzhong Group Co., Deyang 618000

引用本文:

黄始全易幼平李蓬川. 23Co13Ni11Cr3Mo超高强钢的高温变形行为[J]. 材料研究学报, 2011, 25(3): 283-288.
, . High Temperature Deformation Behavior of 23Co13Ni11Cr3Mo Ultrahigh Strength Steel[J]. Chin J Mater Res, 2011, 25(3): 283-288.

全文: PDF(1091 KB)

摘要: 在Gleeble 1500热模拟机上进行大变形等温压缩实验, 研究了23Co13Ni11Cr3Mo钢的高温变形行为。结果表明: 流变应力随着变形温度的降低和应变速率的升高而增大, 在高温、低应变速率下动态再结晶软化效应显著, 在温度为1000℃、应变速率为0.001 s-1时流变应力下降29.6%。23Co13Ni11Cr3Mo钢在温度为1000--1100℃、应变速率为0.01--1 s-1范围内锻造,其动态再结晶充分发生, 晶粒细小, 随变形参数波动变化平缓。根据实验结果建立了峰值流变应力模型及稳态晶粒尺寸模型, 其预测值与实验值吻合得比较好。

关键词 ：金属材料, 超高强钢, 23Co13Ni11Cr3Mo, 动态再结晶, 晶粒尺寸

Abstract：High strain isothermal compression tests were carried out in Gleeble 1500 to study high temperature deformation behavior of 23Co13Ni11Cr3Mo ultrahigh strength steel. The results show that flow stress decreases with temperature increasing, while increases with strain rate increasing. DRX softening played an important role at high temperature and low strain rate. Flow stress decreased about 29.6% from peak stress at 1000^oC and 0.001 s−1. The 23Co13Ni11Cr3Mo ultrahigh strength steel is suit to forge at 1000–1100 ! and strain rate 0.01–1 s−1. At these deformation conditions, sufficiect DRX occurred, grain size was small and changed little with temperature or strain rate increasing. Moreover, based on the experiment results, peak stress and steady grain size model were estalblished. The predicted values of this model agreed well with the experiment values.

Key words： metallic ultrahigh strength steel 23Co13Ni11Cr3Mo dynamic recrystallization grain size

收稿日期: 2011-03-07

ZTFLH:

TG142

基金资助:

国家九七三计划资助项目2011CB706802和国家重大专项资助项目2009ZX04005--011。

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