Deformation mechanism and forming property of A2017 alloys during compression in semi--solid state

Chin J Mater Res

2004, Vol. 18

Issue (3): 285-289 DOI:

Research Articles

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Deformation mechanism and forming property of A2017 alloys during compression in semi--solid state

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东北大学

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. Deformation mechanism and forming property of A2017 alloys during compression in semi--solid state. Chin J Mater Res, 2004, 18(3): 285-289.

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Abstract Semi--solid A2017 alloys were compressed in semi--solid state by means of Gleeble--1500 thermal--mechanical simulator. The microstructures and relationship between the true stress and the true strain were analyzed. The deformation mechanism and forming property of A2017 semi--solid alloys were studied. The results showed that fine and homogeneous non--dendrite microstructures of semi--solid A2017 alloy manufactured by shearing--cooling--rolling (SCR) technology could be obtained and transformed into semi--solid structure which was composed of spherical grains and eutectic liquid through reheating process. The resistance to deformation in semi--solid state decreases as deformation temperature increases or deformation rate decreases. The deformation process of semi--solid A2017 alloy may be divided into four stages. At steady thixotropic deformation stage, the deformation mechanism is liquid flowing, solid particles rotating or sliding, and the thixotropic property is steady. The maximum deformation range is about 60\%.

Key words: synthesizing and processing technics semi-solid metal compression deformation A2017 alloy thixotropi

Received: 19 July 2004

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