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Fracture behaviors of AZ80 magnesium alloy during multiple forging processes GUO Qiang(郭 强), YAN Hong-ge(严红革), CHEN Zhen-hua(陈振华), ZHANG Hui(张 辉) School of Materials Science and Engineering... magnesium alloy during multiple forging processes were investigated. The results show that the cracks firstly initiate at the Mg/Mg17Al12 interface under the hoop tensile stress on equatorial free surface......
Analysis of isothermal forging process and mechanical properties of complex aluminum forging for aviationHU Jian-liang(胡建良), YI You-ping(易幼平), HUANG Shi-quan(黄始全) (School of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China)Abstract:Large complex 7A85 aluminum wing-body joint was forged employing isothermal forging process and its mechanical properties were......
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Numerical simulation on forging process of TC4 alloy mounting parts L? Cheng(吕 成)1, 2, ZHANG Li-wen(张立文)1, 2 1. State Key Laboratory for Materials Modification by Later, Ion and Electron Beams... September 2006 Abstract: In order to eliminate forging defects appearing in production, based on the rigid-viscoplastic FEM principle, the DEFORM3D software package was employed to simulate the forming......
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using free forging as a secondary process. Products from two processes (with and without free forging) were compared in terms of microstructure, transformation temperature and superelasticity. The results showed that, free forging effectively improved the tensile and shape-memory properties. Ductility increased from 6.8% to 9.2% after forging. The maximum strain during superelasticity increased......
High Carbon Alloy Steels with Multiple Types of Ultra-fine Carbides and Their Characteristics QI Yu-hong1,DAI Yu-mei1,LIU Yan-xia1,ZHANG Zhan-ping1,GAO Hong-tao1,MA Yong-qing1 (1.Dalian Maritime University, Dalian, China) 摘要:Under normal forging and annealing conditions, there are different ultra fine carbides (M3C, M23C6, M7C3, M6C and MC) in high carbon alloy steels when alloy composition......
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STUDY ON DESIGN TECHNIQUES OF A LONG LIFE HOT FORGING DIE WITH MULTI-MATERIALS H.C. Wang1,X.J. Liu1,D.W. Li1 (1.School of Materials Science and Engineering, Wuhan University of Technology,Wuhan 430070, China) Abstract:A new design technique for the long life hot forging die has been proposed. By finite elementanalysis, the reason for the failure of hot forging die was analyzed......
A phenomenological constitutive equation for Rene 95 PM alloy and its application to isothermal forging process of turbine diskMaicang Zhang, Jianxin Dong, Yanping Zeng, Xishan XieMaterials Science... and temperature, was established by using multiple nonlinear regression method. A very good agreement was found between predicted and experimental flow stress in all the strain range investigated......