变形温度对00Cr22Ni5Mo3N双相不锈钢组织及超塑性影响

doi:10.3969/j.issn.1000-1093.2013.11.016

兵工学报 ›› 2013, Vol. 34 ›› Issue (11): 1442-1447.doi: 10.3969/j.issn.1000-1093.2013.11.016

变形温度对00Cr22Ni5Mo3N双相不锈钢组织及超塑性影响

李少峰^1，2，任学平¹，李殊霞¹，陈京生³

(1.北京科技大学材料科学与工程学院, 北京 100083; 2.山西利民工业有限责任公司, 山西太谷 030812;3.中国兵器工业标准化研究所北京 100089)

收稿日期:2013-03-19 修回日期:2013-03-19 上线日期:2014-01-22
作者简介:李少峰（1966—）男，博士研究生。
基金资助:
教育部高等学校科技创新工程重大项目培育资金项目(201009);国家自然科学基金重点项目（51334006）

Effect of Deformation Temperature on the Microstructure and Superplasticity of 00Cr22Ni5Mo3N Duplex Stainless Steel

LI Shao-feng^1,2， REN Xue-ping¹， LI Shu-xia¹， CHEN Jing-sheng³

(1.School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China;2.Shanxi Limin Industry Limited Liability Company, Taigu 030812, Shanxi, China;3.Standardization Research Institute, China North Industries Group Corporation, Beijing 100089, China)

Received:2013-03-19 Revised:2013-03-19 Online:2014-01-22

摘要/Abstract

摘要： 00Cr22Ni5Mo3N双相不锈钢经过固溶处理和冷轧变形后，在850～1000℃下保温5min进行恒温超塑性拉伸试验，研究变形温度对00Cr22Ni5Mo3N双相不锈钢超塑性的影响规律。观察各温度下变形前的组织，研究σ相及组织变化对材料超塑性能的影响，从微观上揭示变形温度影响材料超塑性的原因。试验结果表明： 00Cr22Ni5Mo3N双相不锈钢经过1300℃固溶处理并85%冷轧变形，在850～1000℃下保温5min后，随着温度的升高，σ相数量越来越少，组织发生再结晶并形成均匀的等轴晶，而材料的延伸率从480%增大至1290%，变形过程中的峰值应力从125MPa降低至32MPa.

关键词: 金属材料, 双相不锈钢, 超塑性, 变形温度, σ相, 组织转变

Abstract: After the solution treatment and cold rolling deformation of 00Cr22Ni5Mo3N duplex stainless steel, its super plastic deformation test is made at 850～1000℃ for 5 minutes. The effect of deformation temperature on the superplasticity of 00Cr22Ni5Mo3N is studied. Its microstructure before deformation is observed, and the influence of sigma phase and microstructure changes on the superplasticity is researched. The reason why the deformation temperature affects the superplasticity of 00Cr22Ni5Mo3N is revealed. The results show that, when the deformation temperature changes, the microstructure and quantity of σ phase changes, and so does the superplasticity. After solution treatment at 1300℃, 85% of cold rolling deformation, and holding at 850～1000℃ for 5min, its microstructure is recrystallized, the uniform equiaxed grains become more and more with the increase in deformation temperature, and the number of sigma phase gets smaller. Meanwhile, the elongation of 00Cr22Ni5Mo3N duplex stainless steel increases from 480% to 1290%, and the peak stress decreases from 125MPa to 32MPa.

Key words: metallic material, duplex stainless steel, superplasticity, deformation temperature, σ phase, microstructure transformation

中图分类号:

TG113.25+3

李少峰，任学平，李殊霞，陈京生. 变形温度对00Cr22Ni5Mo3N双相不锈钢组织及超塑性影响[J]. 兵工学报, 2013, 34(11): 1442-1447.

LI Shao-feng， REN Xue-ping， LI Shu-xia， CHEN Jing-sheng. Effect of Deformation Temperature on the Microstructure and Superplasticity of 00Cr22Ni5Mo3N Duplex Stainless Steel[J]. Acta Armamentarii, 2013, 34(11): 1442-1447.

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变形温度对00Cr22Ni5Mo3N双相不锈钢组织及超塑性影响

Effect of Deformation Temperature on the Microstructure and Superplasticity of 00Cr22Ni5Mo3N Duplex Stainless Steel

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