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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......
Trans. Nonferrous Met. Soc. China 22(2012) s656-s660 Microforming of superplastic 5083 aluminum alloy Md. Abu Mowazzem HOSSAIN1, Sung-Tae HONG1, Kyu-Yeol PARK1, Young-Sang NA2 1. School of Mechanical...: The mechanical behavior of superplastic 5083 aluminum alloy during microforming process was investigated by finite element analysis. A micro V-groove die was modeled to analyze the effects of forming......
: A Microforming behavior of Zr-based bulk metallic glass GUO Xiao-lin, WANG Chun-ju, ZHOU Jian, SHAN De-bin, GUO Bin (School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China) Abstract: The microforming behavior of Zr41.2Ti13.8Cu12.5Ni10Be22.5 bulk metallic glass (Vit.1) in the supercooled liquid region was investigated. The stress-strain relations......
; Abstract: Microforming is an effective method to manufacture small metal parts. However, macro forming can not be transferred to microforming directly... effects were also discussed. Key words: microforming; size effects; flow stress; friction factor; cylinder compression  ......
of Technology, Harbin 150001, China Received 9 July 2012; accepted 10 August 2012 Abstract: To analyze the effect of single grain deformation behaviors on microforming process, a crystal plasticity model... of microforming processes with characteristics, such as scale dependency, scatter of flow stress and inhomogeneous deformation. Key words: microforming; scale effect; crystal plasticity; crystal......
billet or sheet is larger than that of circular section billet. Key words: microforming; flow stress; scale effect; billet dimension; crystal plasticity theory; surface layer model; Hall-Petch relation..., and their technical requirements are higher and higher[1]. Under such circumstance, in 1990s, microforming technology came into being, that is, traditional plastic forming process was applied to micro scale......
between surface grains and inner grains is developed to model size effects in microforming. Through finite element simulation, the effects of specimen size, grain size, and orientation of surface grains......
; accepted 12 May 2014 Abstract: To decrease the size effects of friction in microforming, three kinds of surface coatings, such as diamond-like carbon (DLC), TiN and MoS2, were deposited on surfaces... of the micro-parts. Key words: micro-deep drawing; diamond-like carbon film; tribological behavior; micro-cups; graphitization 1 Introduction Microforming process is very suitable for the massive......
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transferred to analyze the microforming process. JUSTINGER et al[13-15] considered the Taylor factors to estimate the conditions under which a micro forming process is likely to be influenced by single..., MERKLEIN M, TOLAZZI M. Metal forming ensures innovation and future in Europe [C]// BARIANI P F. Proceeding of the 8th ICTP. Verona, 2005. [2] ENGEL U, ECKSTEIN R. Microforming-From basic research to its......