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, Japan Received 17 October 2013; accepted 8 April 2014 Abstract: The Al-Zn eutectoid alloy has been widely known as a typical superplastic metallic material, where fine-grained microstructure is usually...-zinc alloy; eutectoid; microstructure control; hot-rolling; superplastic material 1 Introduction The Al-Zn eutectoid alloy has been known to exhibit superplasticity at high testing temperatures, where......
and internal cavitation needed to determine the SPF potential of a material. Key words: AA5083 aluminum alloy; superplastic forming; forming limit; cavitation 1 Introduction The superplasticity is a term... work has been carried out on the influence of material and temperature on cavitation under biaxial tension. Since biaxial stretching is the dominant stress state in the superplastic sheet blow forming......
sensitivity, n is the strain hardening coefficient, and K is the material constant. In Ref.[11], the integral equation of damage evolution in superplastic metal is expressed as  ...; Dc is the critical value of damage variable. 3.6 Determination of material characteristic parameters in damage evolution equation In superplastic deformation, cavity fraction volume(fv......
The properties of ceramic die material required for use in superplastic forming mainly include good hot strength to resist cracking and fracture, low hot deformation and minimal chemical interaction..., Khraisheh M. Finite element modeling of superplastic forming in the presence of back pressure [J]. Material Science Forum, 2007, 551/552: 257-262. [7] Lee H S, Yoon J H, Park C H, Ko Y G, Shin D h, Lee C s......
Article ID: 1003-6326(2005)02-0384-05 Superplastic solid state welding of steel and copper alloy based on laser quenching of steel surface ZHANG Ke-ke(张柯柯), HAN Cai-xia(韩彩霞), QUAN Shu-li(权淑丽), CHENG Guang-hui(程光辉), YANG Jie(杨 洁), YANG Yun-lin(杨蕴林) (College of Material Science and Engineering, Henan University of Science and Technology, Luoyang 471003, China) Abstract: Based......
and development direction of superplastic magnesium alloys CHEN Zhen-hua, LIU Jun-wei, CHEN Ding, YAN Hong-ge (School of Materials Science and Engineering, Hunan University, Changsha 410082, China) Abstract: The active energy and constitutive equations of magnesium alloys formed under different conditions were reviewed. The superplastic characteristics of coarse and fine-grained magnesium alloys were......
Microforming of superplastic 2091Al-Li alloyWANG Chang-li(王长丽), ZHANG Kai-feng(张凯锋), DING Shui(丁 水)(School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China)Abstract:Stainless die with micro-groove and micro-hole have been designed and manufactured, which has been used to study superplastic microforming of 2091Al-Li alloy by means of superplastic forming......
growth. For fine grained material, boundary sliding accommodated by dislocation motion is the main deformation mechanisms. For coarse grained material, superplastic deformation is accommodated...; Microstructural evolution during superplastic deformation of Ti-6Al-4V alloy ZHAO Wen-juan1, DING Hua1, CAO Fu-rong1, HOU Hong-liang 2, LI Zhi-qiang2 (1. School of Materials and Metallurgy, Northeastern......
Superplastic behaviour and microstructure evolution of a fine-grained TA15 titanium alloyZHAO Zhanglong, GUO Hongzhen, CHEN Li, and YAO Zekun School of Material Science and Engineering, Northwestern... combined with high and low temperatures, and a transnormal superplastic elongation of more than 2000% was obtained. The superplastic behaviour and microstructure evolution were systematically researched......