title: Effect of ultrafine grain on tensile behaviour and corrosion resistance of the duplex stainless steel.
abstract: The ultrafine grained 2205 duplex stainless steel was obtained by cold rolling and annealing. The tensile properties were investigated at room temperature. Comparing with coarse grained stainless steel, ultrafine grained sample showed higher strength and plasticity. In addition, grain size changed deformation orientation. The strain induced α'-martensite was observed in coarse grained 2205 duplex stainless steel with large strain. However, the grain refinement inhibited the transformation of α'-martensite;nevertheless, more deformation twins improved the strength and plasticity of ultrafine grained 2205 duplex stainless steel. In addition, the grain refinement improved corrosion resistance of the 2205 duplex stainless steel in sodium chloride solution.
authors.affiliation: Beijing Key Laboratory of Fine Ceramics, Institute of Nuclear and New Energy Technology, Tsinghua University, Zhongguancun Street, Haidian District, Beijing 100084, China; State Key Lab of New Ceramic and Fine Processing, Tsinghua University, Beijing 100084, China. Electronic address: ljltsinghua@126.com.
authors.forename: Lv
authors.initials: L
authors.lastname: Jinlong
authors.affiliation: Beijing Key Laboratory of Fine Ceramics, Institute of Nuclear and New Energy Technology, Tsinghua University, Zhongguancun Street, Haidian District, Beijing 100084, China; State Key Lab of New Ceramic and Fine Processing, Tsinghua University, Beijing 100084, China. Electronic address: txliang@mail.tsinghua.edu.cn.
authors.forename: Liang
authors.initials: L
authors.lastname: Tongxiang
authors.affiliation: Beijing Key Laboratory of Fine Ceramics, Institute of Nuclear and New Energy Technology, Tsinghua University, Zhongguancun Street, Haidian District, Beijing 100084, China; State Key Lab of New Ceramic and Fine Processing, Tsinghua University, Beijing 100084, China.
authors.forename: Wang
authors.initials: W
authors.lastname: Chen
authors.affiliation: Beijing Key Laboratory of Fine Ceramics, Institute of Nuclear and New Energy Technology, Tsinghua University, Zhongguancun Street, Haidian District, Beijing 100084, China; State Key Lab of New Ceramic and Fine Processing, Tsinghua University, Beijing 100084, China.
authors.forename: Dong
authors.initials: D
authors.lastname: Limin
mesh_terms: D003343:Corrosion; D003722:Dental Alloys / Q000737:chemistry; D055664:Electrochemical Techniques; D046529:Microscopy, Electron, Transmission; D013193:Stainless Steel / Q000737:chemistry*; D013718:Tensile Strength; D014961:X-Ray Diffraction
chemical_list: D003722:Dental Alloys; C093824:Martensite; D013193:Stainless Steel
keywords: Corrosion; Duplex stainless steel; Grain refinement; Passive film; Tensile behaviour