Deformation behaviour of aluminum alloy A356 in semisolid state
Paper
Paper/Presentation Title | Deformation behaviour of aluminum alloy A356 in semisolid state |
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Presentation Type | Paper |
Authors | Wang, H. (Author) and Ning, Z. L. (Author) |
Editors | Aravinthan, Thiru, Karunasena, Warna (Karu) and Wang, Hao |
Journal or Proceedings Title | Proceedings of the 20th Australasian Conference on the Mechanics of Structures and Materials (ACMSM 20) |
Number of Pages | 6 |
Year | 2009 |
Place of Publication | London, United Kingdom |
ISBN | 9780415491969 |
Conference/Event | 20th Australasian Conference on the Mechanics of Structures and Materials (ACMSM20) |
Event Details | Rank B B B B B B B B B B B B B B B B B |
Event Details | 20th Australasian Conference on the Mechanics of Structures and Materials (ACMSM20) Parent Australasian Conference on the Mechanics of Structures and Materials Event Date 02 to end of 05 Dec 2008 Event Location Toowoomba, Australia |
Abstract | The deformation behaviours of A356 alloy with various initial grain structures, from a very coarse dendrite to a fine equiaxed structure, prepared at different pouring temperatures were investigated. Cylindrical specimens were compressed to a height reduction of 6 mm at an initial strain rate of 1.39 × 10-3/s and then jumped to 1.39 × l0-2/s. The instantaneous strain rate sensitivity was calculated under iso-structure conditions. Three very different deformation behaviours have been observed, which are believed to have resulted from their different starting microstructures. The materials produced at low pouring temperatures evolve into a fine globular structure after isothermal holding at semisolid region and shows a very low compression stress, while the materials cast at high pouring temperatures remain as coarse and dendritic in its microstructure and have one order of magnitude higher compression stress. The macrostructural breakage and microstructural segregation of hot compressed samples were analyzed and the deformation mechanisms were discussed. |
Keywords | A356 alloys; compression stress; cylindrical specimens; deformation behaviour; deformation mechanism; equiaxed structures; globular structure; grain structures; height reduction; initial strains; isothermal holding; micro-structural; order of magnitude; pouring temperatures; semi-solid state; strain rate sensitivity; structure conditions |
ANZSRC Field of Research 2020 | 401607. Metals and alloy materials |
401707. Solid mechanics | |
401605. Functional materials | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Centre of Excellence in Engineered Fibre Composites |
Harbin Institute of Technology, China | |
Institution of Origin | University of Southern Queensland |
Book Title | Futures in mechanics of structures and materials |
https://research.usq.edu.au/item/q1343/deformation-behaviour-of-aluminum-alloy-a356-in-semisolid-state
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