Effect of ECAP pass number on mechanical properties of 2A12 Al alloy

Jianqiang Bi; Kangning Sun; Rui Liu; Runhua Fan; Sumei Wang

doi:10.1007/s11595-006-1071-4

Journal of Wuhan University of Technology Materials Science Edition ›› 2008, Vol. 23 ›› Issue (1) : 71 -73. DOI: 10.1007/s11595-006-1071-4

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Effect of ECAP pass number on mechanical properties of 2A12 Al alloy

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Abstract

2A12 Al alloy was suffered from equal-channel angular pressing(ECAP) in this experiment. The influence of ECAP pass number on ultimate strength(UTS), hardness and elongation was studied. The results show that during ECAP the number of sample passing through the channels is very important for mechanical properties and microstructure refinement. ECAP not only increases their plasticity and hardness but also leads to refined grain. But the elongation reduces from 17.5% to11.8 % after 1 pass ECAP, then almost tends to be unchanged with the increasing of pass number. The value of ultimate strength of 2A12 Al alloy increases by 135%, hardness by 51%, and ultra fine grains of about 200 nm can be observed after 8 passes.

Keywords

ECAP / ultra-fine grain materials / Al alloy 2A12 / mechanical properties

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Jianqiang Bi, Kangning Sun, Rui Liu, Runhua Fan, Sumei Wang. Effect of ECAP pass number on mechanical properties of 2A12 Al alloy. Journal of Wuhan University of Technology Materials Science Edition, 2008, 23(1): 71-73 DOI:10.1007/s11595-006-1071-4

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