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《Journal of Shanghai Jiaotong University》 1984-04
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A Study of a Dual Phase Low Carbon Manganese-Niobium Steel

Xu Zuoren Yu Jinxing  
A study has been made of the effects of morphology and volume fraction of mar-tensite obtained by various intercritical heat treatments on the substructure of theindividual phases,mechanical behavior and formability of a dual phase low carbonmanganese-niobium steel.The experimental results illustrate that,with various kinds ofheat treatments,changes occur in the mechanism of nucleation and growth of austeniteduring phase transformation by heating,resulting in remarkable differences in the mor-phologies and mechanical behavior of the dual phase steel.The dislocation density andstrength of the ferrite phase are enhanced as the volume fraction of martensite increas-es.The carbon content and strength of martensite phase decrease as the volumefraction of martensite increases.The mechanical behavior of the dual phase steel ismainly determined by the mixture ratio of phases and their morphologies.The micro-structure and mechanical properties of ferrite and martensite in the dual phase steel aresignificantly different from those of steel with individual phases.The law of mixture de-duced from Mileiko's models can well be used for calculating the strength of fiber-streng-thened composite materials but will not satisfy strength calculations of dual phasesteels.A New mixture rule is proposed which either agrees well with the experimentalresults or is suited for expressing the strength-volume fraction of martensite relation-ship.The results of cold formability tests demonstrate that the dual phase low carbonmanganese-noibium steel with 15~20% martensite exhibits excellent stretchability andhas about 10% smaller springback than the as rolled steels at the same level of tensilestrength,indicating a significant“shapeholding”advantage.
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【References】
Chinese Journal Full-text Database 1 Hits
1 Wu Yuping Sun Hongfei Yin Huayao Xu Qingxin (Shandong Mineral Couage Jinan);STRUCTURE AND SUBSTRUCTURE OF 27SiMn STEEL CRITICAL HARDENING[J];SHANDONG SCIENCE;1996-03
【Citations】
Chinese Journal Full-text Database 2 Hits
1 Lei Tingquan; Shen Xianpu (Harbin Institute of Technology, Harbin);A STUDY ON DUAL-PHASE STEEL 20[J];Acta Metallurgica Sinica;1982-01
2 Xu Zuoren;Rong Xuehua;Zhuang Heling;Yu Jinxing;Effects of Intercritical Heat Treatment on Formation of Austenite Morphology of Microstructure and Mechanical Properties in Low Alloy High Strength Steel[J];Journal of Shanghai Jiaotong University;1983-01
【Co-citations】
Chinese Journal Full-text Database 10 Hits
1 Lei Tingquan Liu Guangkui (Harbin Institute of Technology);On the Law of Strength of Plain Carbon DLtal-Phase Steels[J];;1983-03
2 Sun Shunting Yang Dezhuang Lei Tingquan (Harbin Institute of Technology) Zhang Jiuxin Wang Mingwei (Anshan Iron & Steel Complex);Impact Fracture Behavior of Lamina Type Dual-Phase Steel in a Notched Condition[J];;1986-02
3 Wang Chuanya; Wang Jingzhong;The Effect of Morphologies and Quantity of a-Phase during the IHT on Strength and Toughness of Steel[J];Journal of Dalian Railway Institute;1983-Z1
4 Wang Chuanya; Li Yili;The IHT of Low-Carbon Steel[J];Journal of Dalian Railway Institute;1983-Z1
5 B. D. Hong;T. C. Lei and W. Y. Zhao Harbin Institute of Technology;AN INVESTIGATION OF FRACTURE CHARACTERISTICS OF 1010 DUAL-PHASE STEEL BY SEM[J];Journal of Chinese Electron Microscopy Society;1984-01
6 Lei Tingquan Shen Xianpu Pan Jie (Harbin Institute of Technology);TENSILE BEHAVIOR AND FRACTURE CHARACTERISTICS OF STEP-QUENCHED DUAL-PHASE STEEL 20[J];Gangtie;1983-07
7 Yang Hanpu (Chengdu Iron & Steel Works);RESEARCH ON DUAL-PHASE REINFORCED BARS[J];Gangtie;1985-08
8 Lu Xingang;Effect of Intercritical Heat Treatment (IHT) on Low-temperature Toughness of Three Kinds of Structural Steel[J];Journal of National University of Defense Technology;1988-04
9 Shen Xianpu Lei Tingchuan(Harbin Institute of Technology);On the theories of strength of dual phase steels[J];Materials For Mechanical Engineering;1984-06
10 Gong Ming Shu Delin Niu Xiaoming (Anhui Institute of Technology, Hefei 230069,PRC);Impact Tensile Behavior of Dual Phase 20Cr Steel[J];Materials For Mechanical Engineering;1996-06
【Co-references】
Chinese Journal Full-text Database 8 Hits
1 Xu Zuoren;Wang Zifang;Effects of Intercritical Heat Treatment on Phase Transformation, Microstructures and Mechanical Properties of Hypoeutectoid Steel[J];Journal of Shanghai Jiaotong University;1983-03
2 Xu Zuoren Hu Yaorong;The Effects of Intercritical Heat Treatment on the Transformation of Reverted Austenite and Cryogenic Mechanical Properties of Fe-6Mn-0.5Mo-0.1Al Steel[J];Journal of Shanghai Jiaotong University;1983-04
3 Xu Zuoren Liu Xiaodong;A Study of the Relationship between Strength and Plasticity of Low Carbon Low Alloy Dual Phase Steel[J];Journal of Shanghai Jiaotong University;1988-01
4 Xu Zuoren Liu Xiaodong;Effect of Second Phase Morphology and Fraction on the Tensile Fracture Behaviour of Dual Phase steels[J];Journal of Shanghai Jiaotong University;1988-05
5 Xu Zuoren Shan Ende;Effect of Microstrucutre on strength Toughness and contact Fatigue Life of Ball Bearing Steel with a Mixed Structure of Martensite and Bainite[J];Journal of Shanghai Jiaotong University;1988-06
6 Xu Zuoren;Huang Kingjia;A Study of the Mechanical Properties of Martensite--Bainite Dual Phase Structure of Ball Bearing Steel[J];Journal of Shanghai Jiaotong University;1989-04
7 Xu Zuoren Huang Xingjia;Influence of Structural Parameters on the Yield Strength of Tempered Bearing Steel with Martensite-Bainite Dual Phase Structure[J];Journal of Shanghai Jiaotong University;1991-01
8 Xu Zuoren Dong qing;Influece of Transformation Temperature of Lower Bainite on The structral parameters and Mechanical properties of Bearing steel[J];Journal of Shanghai Jiaotong University;1991-05
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