Paper Title:
Continuous Fabrication of Sound Semi-Solid Slurry for Rheoforming
  Abstract

An alternative method has been proposed for the continuous and sample production of SSM slurry for the rheo-forming process. The process named “Low Superheat Pouring with a Shear Field (LSPSF)” dose not use the conventional stirring process, instead, it uses solidification conditions to control nucleation, nuclei survival and grain growth by means of low superheat pouring, vigorous mixing and rapid cooling during the initial stage of solidification combined with thereafter a much slower cooling. The method has been applied to A356, 201 and A380 Al-alloys. The primary phases present in average equivalent diameter of 40-70μm, 35-50μm and 50-70μm for A356, 201 and A380, respectively. The morphology of primary phases is nearly spherical with shape factor of 0.78-0.86, 0.71-0.83 and 0.85-0.96 for A356, 201 and A380, respectively. For each of those alloys, there is no eutectic entrapped within the primary phase. The advantages of the LSPSF include process simplicity with high efficiency, easy incorporation into existing metal forming installation without infrastructure changes and a wide process window for pouring temperature.

  Info
Periodical
Solid State Phenomena (Volumes 116-117)
Edited by
C.G. Kang, S.K. Kim and S.Y. Lee
Pages
425-428
DOI
10.4028/www.scientific.net/SSP.116-117.425
Citation
H. M. Guo, X. J. Yang, "Continuous Fabrication of Sound Semi-Solid Slurry for Rheoforming", Solid State Phenomena, Vols. 116-117, pp. 425-428, 2006
Online since
October 2006
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Dock Young Lee, Suk Won Kang, Ki Bae Kim
Abstract:Recently, a rheocasting process has been interested to produce a structural part for an automobile industry and so the slurry-on-demand...
779
Authors: Xiang Jie Yang, Hong Min Guo
Abstract:Rheo-die casting (RDC) based on LSPSF (low superheat pouring with a shear field) rheocasting process has been exploited. In case of...
163
Authors: Zheng Liu, Fu Yong Wang, Kai Cao, Hong Biao Xu, Mei Yan Huang
Chapter 2: Manufacturing and Design Science
Abstract:The semisolid A356 alloy slurry was prepared by low superheat pouring and slightly electromagnetic stirring (LSPSES). The effects of...
886
Authors: Man Huan Li, Guo Xing Tang, Wei Min Mao, Yong Feng Liu
Chapter 1: Advanced Materials Science
Abstract:The semisolid slurry of A356 Al alloy was prepared by low superheat pouring and weak traveling-wave electromagnetic stirring (LSPWES), and...
69
Authors: W.M. Mao, Z.Z. Chen, H.W. Liu, Y.G. Li
Chapter 4: Process Development
Abstract:The semi-solid slurry of A356 aluminum alloy was prepared through a serpentine pouring channel, which is a new method proposed recently for...
404