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Continuous and directional solidification technology of titanium alloys with cold crucible CHEN Rui-run(陈瑞润), DING Hong-sheng(丁宏升), GUO Jing-jie(郭景杰), BI Wei-sheng(毕维生), FU Heng-zhi(傅恒志) School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China Received 20 April 2006; accepted 30 June 2006 Abstract: The experiments of continuous and directional......
extrusion compression (CEC) is very suitable for grain refinement of Mg alloys due to its characteristics of continuous deformation and special stress condition. The CEC method was designed... HJELEN2, Hans J. ROVEN2,6 1. National Engineering Research Center of Light Alloy Net Forming, Shanghai Jiao Tong University, Shanghai 200030, China; 2. Department of Materials Science and Engineering......
increases with the decrease of temperature and wall thickness. Key words: aluminum alloy A356; backward extrusion; semisolid forming; rheology 1 Introduction About 40 years ago, SPENCER et al[1] noticed... extrusion. Forming condition was isothermal. In order to maintain constant temperatures, the forming process was conducted in a resistance furnace. K-type thermocouples were used to measure......
Effect of extrusion on properties of Al-based composite R. DASGUPTA, S. DAS, S. CHATURVEDI, A. K. JHA Advanced Materials and Processes Research Institute, CSIR Bhopal 462064, Madhya Pradesh... the benefits of composite and extrusion on the alloy. It was observed that composites drastically increased the hardness and the extruded composites further increased this value. The advantage of composites......
Effects of conform continuous extrusion and heat treatment on the microstructure and mechanical properties of Al–13Si–7.5Cu–1Mg alloyGao-yong Lin,Xin Tan,Di Feng,Jing-li Wang,Yu-xia Lei摘 要:The effects of conform continuous extrusion and subsequent heat treatment on the mechanical and wear-resistance properties of high-alloying Al–13Si–7.5Cu–1Mg alloy......
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in this work (Unit: mm): (a) Plane view; (b) Vertical view Fig.4 Procedure of porthole die extrusion: (a) Dividing stage; (b) Welding stage; (c) Forming stage; (d) One-sixth of billet 3 Results...J. Cent. South Univ. Technol. (2010) 17: 688-696 DOI: 10.1007/s11771-010-0541-1 Effects of process parameters and die geometry on longitudinal welds quality in aluminum porthole die extrusion......
Article ID: 1003-6326(2005)02-0427-05 Plasma spray forming of functionally graded materials mould ZHAO Zi-yu(赵紫玉), FANG Jian-cheng(方建成), LI Hong-you(李洪友) (College of Mechanical Engineering... fabricating, FGM forming and demoulding, etc. The results show that the service performance of the FGM mould is much more excellent than the one composed of the traditional materials, and the life......
be expressed as where p1, p2 and p3 are the backward extrusion pressure of three cylinder elements respectively, p4 is the forming pressure of ring shape element, d1, d2, …, d7 are the inner or outer... technologies of CFC during the forming process of multi-lay cylinder parts were studied. The calculation model and formulation of backward extrusion force was proposed. The results calculated by it show good......
J. Cent. South Univ. Technol. (2009) 16: 0360-0364 DOI: 10.1007/s11771-009-0061-z Effect of low-frequency rotary electromagnetic-field on solidification structure of continuous casting... of austenitic stainless steel in rotary electromagnetic-field, the influence of low-frequency rotary electromagnetic-field on solidification structure of austenitic stainless steel in horizontal continuous......
