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《Journal of University of Science and Technology Beijing》 2004-01
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Effect of Strain-Induced Transformation on Grain Refinement of SAF2205 during Superplastic Deformation

ZHANG Peixue, REN Xueping, XIE Jianxin, WANG Wei Materials Science and Engineering School, University of Science and Technology Beijing, Beijing 100083, China  
A theoretic equation of deformation work, phase transformation temperature, initial grain size and metal structure was analyzed, and a method of controlling the precipitation of σ phase was provided. On this basis, the properties and microstructures of SAF2205 duplex stainless steel during isothermal hot tensile tests were investigated by means of stepped isothermal tension. The result shows that, with the method of fast cooling and temperature-changed isothermal hot tension, the precipitation of σ phase can happen during the deformation, and the tiny and dispersed σ phase can limit the growth of the grains. In order to realize the strain-induced precipitation of σ phase and the superplastic deformation of duplex stainless steel in lower temperatures, a faster cooling velocity needs to be applied.
【Fund】: 北京市科委基金资助项目(No.9550310900)
【CateGory Index】: TG113
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【References】
Chinese Journal Full-text Database 1 Hits
1 ZHANG Peixue, REN Xueping, XIE Jianxin, ZHANG Bingzhe, HAN Wendian, SONG JieMaterials Science and Engineering School, University of Science and Technology Beijing, Beijing 100083, ChinaTechnology Center, Jinan Iron & Steel Co. Ltd., Jinan 250101, ChinaScheduling Department, Jinan Iron & Steel Co. Ltd., Jinan 250101, China;Superplasticity mechanism of duplex stainless steels[J];Journal of University of Science and Technology Beijing;2005-01
【Citations】
Chinese Journal Full-text Database 1 Hits
1 REN Xueping, TANG Di, ZHANG Haibin, CUI GuangchunMaterial Science and Engineering School,University of Science and Technology Beijing, Beijing 100083 Correspondent: REN Xueping, professor, Tel: (010)62333174, Fax: (010)62334559,E-mail: xuepren@mater.ustb.;EFFECT OF DEFORMATION WORK AND COOL SPEED ON THE MICROSTRUCTURE REFINEMENT OF METALS[J];Acta Metallrugica Sinica;2002-03
【Co-citations】
Chinese Journal Full-text Database 1 Hits
1 University of Science and Technology Beijing Zhang Peixue Ren Xueping Xie Jianxin Mao Jianjun Taiyuan Iron & Steel Group Ltd Zhang Lan;Effect of σ phase on superplasticity of duplex stainless steel in lower temperature[J];Forging & Stamping Technology;2003-02
【Co-references】
Chinese Journal Full-text Database 8 Hits
1 Chen Puquan Cui Zhongqi Zhao Min (Harbin Institute of Technology);Problems Related to Advances Directions and Mechanisms in Superplasticty[J];;1990-02
2 LIU De lu, WANG Yuan li, HUO Xiang dong, CHEN Nan jing, SHAO Wei ran (Department of Material Physics and Chemistry, University of Science and Technology Beijing, 100083 Beijing, China);Electron microscopic study on nano scaled precipitation in low carbon steels[J];Journal of Chinese Electron Microscopy Society;2002-03
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