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of wrought aluminum alloy 2024 was prepared by a well developed rheocasting process, low superheat pouring with shearing field(LSPSF). The appreciate combination of pouring temperature and rotation... plays a very important role, because it is the most important factor to achieve the cost effectively and make rheoforming commercialized in industry application. At present, there are many rheocasting......
aspects of the NRC semi-solid casting technology[J]. Aluminum, 2000, 76(1/2): 70-75. [9] YURKO J A, FLEMINGS M C, MARTINEZ R A. Semisolid rheocasting (SSR)-increasing the capabilites of die casting... developed rheocasting process named as low superheat pouring with a shear field (LSPSF), a new one-step semi-solid processing technique, the rheo-diecasting (RDC) process, was exploited. The porosity......
/fragmented grains and then washed away continuously by producing semisolid slurry at plate exit. Plate cooling rate provides required extent/amount of solidification whereas plate length enables necessary shear for producing semisolid slurry of desired quality. Slurry obtained is solidified in metal mould to produce semisolid-cast billets of desired microstructure. Furthermore, semisolid-cast......
. Semisolid metal processing [J]. International Materials Reviews, 1994, 39(5): 173-189. [5] CURLE U A, MOLLER H, WILKINS J D. Shape rheocasting of high purity aluminum [J]. Scripta Materialia, 2011, 64... (SEM). The semisolid slurry analyses show that the solid fraction of ADC12 aluminum alloy increases from 0.38 to 0.43 while the roundness decreases from 0.45 to 0.38 with increasing the rotational......
behavior of primary solid particles in magnesium alloy semisolid slurry during electromagnetic stirring ZHANG Xiao-li1, 2, LING Xiang-jun1, 2, LI Ting-ju3, XIE Shui-sheng4, JIN Yun-xue1, 2..., Beijing 100088, China) Abstract: AZ91D magnesium alloy semisolid slurry was prepared using rotating electromagnetic stirring, and the molded samples were obtained at different pouring temperatures from......
Low Superheat Pouring with a Shear Field in Rheoeasting of Aluminum Alloys郭洪民,杨湘杰摘 要:<正>A new rheocasting process,Low Superheat Pouring with a Shear... directly lead to the grain refinement of the rheocasting microstructure,and high nuclei density combined with a slower cooling afterwards leads to a globular structure of primary phases.关键词:......
, CHAO Run-ze, FENG Zhen-xian, LIU Chun-ming School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China Received 31 October 2011; accepted 26 May 2012 Abstract: A novel semisolid... with good quality was produced by the proposed process. The microstructures of the strip are mainly composed of spherical or rosette grains. Key words: A2017 alloy; semisolid; sloping plate; rolling......
for the follow-up rheocasting. The influence of cooling rate on the microstructure evolution of primary α(Al) during TH treatment was investigated. The results show that as the cooling rate of the slurry... which can lead to hot tearing, thixoforming of 7xxx series wrought aluminum alloys has not been available in industrial application. In recent years, rheocasting process has increasingly gained......
for Semisolid Forming, Department of Mechanical Engineering, Indian Institute of Science, Bangalore 560012, India Received 13 May 2010, accepted 12 July 2010 Abstract: Thixocasting requires manufacturing of billets with non-dendritic microstructure. Aluminum alloy A356 billets were produced by rheocasting in a mould placed inside a linear electromagnetic stirrer. Subsequent heat treatment......
-Mg matrix occurred during the reheating of these materials. Spherical semisolid slurries of these materials were obtained when the reheating temperature and isothermal holding time were 550?C and 20 s, respectively. The presence of SiCp in AZ91-Si Cpnot only caused lower liquid fractions of semisolid slurries but also resulted in higher values of flow stress during semisolid compression tests......