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| THE m-C-δ OR m-k-δ RELATIONS OF SUPERPLASTICITY OF Zn-5%Al EUTECTIC ALLOY |
| LIU Qin(Chin Liu);XIA Chu;LIU Xiaodong Shanghai Jiaotong University |
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Cite this article:
LIU Qin(Chin Liu);XIA Chu;LIU Xiaodong Shanghai Jiaotong University. THE m-C-δ OR m-k-δ RELATIONS OF SUPERPLASTICITY OF Zn-5%Al EUTECTIC ALLOY. Acta Metall Sin, 1985, 21(2): 111-117.
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Abstract The m-C-δ or m-k-δ relations(simply called m-δ relation)have been obtainedfor the Zn-5%Al eutectic alloy with three average strain rates:3.7×10~(-2),7.4×10~(-2)and 1.1×10~(-1) min~(-1),at five temperatures:170,190,210,230 and 250℃.It was found that all m values increased rapidly with the increase in strainat the start,till a certain strain,called limit strain,was reached and then decreasedslowly and remained steady till fracture.A peak m value corresponding to the limitstrain may be found on each curve.The equation suggested by one of the authorscan apply to this alloy and all C values including C_I and C_F has been calculatedfor every point on all m-C-δ or m-k-δ curves.The plots of relations of C vs δ arenearly straight lines.The slopes of these lines fall suddenly at the limit strain.
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Received: 18 February 1985
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