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2篇 您的检索式:作者名="H.S.Di"
    题名 作者 年代 出处 被引量
1HOT DUCTILITY OF 304HC STAINLESS STEEL AND THE MODEL OF RESISTANCE TO DEFORMATION显示文摘The ductility map of 304HC stainless was determined by using the Gleeble-1500 dy-namic thermal-mechanical simulator. The effect of Cu on the hot ductility of 304HCstainless steel was analyzed and the mathematical model of resistance to deformationwas established. The microstructure, inclusion and fracture surface were studied byusing the method of microstructure analysis, scanning, energy spectrum and electronmicroscope. The results show that Cu has effect on the hot ductility, and the hotductility of 30,4HC stainless steel decrease with the increase of content of Cu. Thedeformation temperature also has much effect on the hot ductility, the suitable defor-mation temperature are 1100-1200℃. The reason of it is that the Cu rich chemicalcompounds were precipitated from austenite phase during cooling. The Cu rich chem-ical compounds are brittle substance such as Cu2S, Cu2O and ε-Cu etc.H.S.Di G.Z.Cui G.D.Wang X.H.Liu 2003Acta Metallurgica Sinica(English Letters)2003,16,2:4
2Hot Deformation Behavior and Processing Maps of a High Al-low Si Transformation-Induced Plasticity Steel: Microstructural Evolution and Flow Stress Behavior显示文摘Hot deformation behavior of a high Al-low Si transformation-induced plasticity(TRIP) steel was studied by an MMS-300 thermo-simulation machine at the temperature range of 1050–1200℃ and strain rate range of 0.01–10s^(-1). The constitutive equations of the TRIP steel were established at high temperature by fitting the strain factor with a sixth-order polynomial. The instability during hot rolling was discussed using processing maps. The results reveal that two types of flow stress curves(dynamic recrystallization and dynamic recovery) were observed during the hot compression of the high Al-low Si TRIP steel. Flow stress decreased with increasing deformation temperature and decreasing strain rate. The predicted flow stress of experimental TRIP steel is in agreement with the experimental values with an average absolute relative error of 4.49% and a coefficient of determination of 0.9952. According to the obtained processing maps, the TRIP steel exhibits a better workability at strain rate of 0.1s^(-1) and deformation temperature of 1200℃ as compared to other deformation conditions.H.Q.Huang H.S.Di N.Yan J.C.Zhang Y.G.Deng R.D.K.Misra J.P.Li 2018Acta Metallurgica Sinica(English Letters)2018,31,5:3
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