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Effect of predeformation and heat treatment conditions in the SIMA process on microstructural and mechanical properties of A319 aluminum alloy

Arami, H ; Sharif University of Technology | 2009

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  1. Type of Document: Article
  2. DOI: 10.1016/j.jallcom.2008.01.020
  3. Publisher: 2009
  4. Abstract:
  5. In this study the influences of predeformation and heat treatment conditions on stress-induced melt activating process (SIMA) of A319 aluminum alloy were investigated. At 30% of predeformation a dominant globular structure of grains was obtained. However, further increasing of the predeformation rate considerably reduced the shape factor. The holding time of 10-15 min at semi-solid temperature of 580 °C was suggested in order to prevent grain growth. Coarsening of the grains by excess time or temperature of heat treatment reduced the tensile strength of the alloy. © 2008 Elsevier B.V. All rights reserved
  6. Keywords:
  7. Mechanical properties ; Metallography ; Alumina ; Aluminum alloys ; Cerium alloys ; Dendrites (metallography) ; Grain growth ; Heat treating furnaces ; Heat treatment ; Light metals ; Mechanical properties ; Metallic compounds ; Metallurgy ; Microstructure ; Smelting ; Tensile strength ; Globular structures ; Heat treatment conditions ; Holding times ; Induced melts ; Metals and alloys ; Microstructural ; Semi solids ; Shape factors ; Sima processes ; Alloys
  8. Source: Journal of Alloys and Compounds ; Volume 468, Issue 1-2 , 2009 , Pages 130-135 ; 09258388 (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/abs/pii/S0925838808000200