| SIMULATION OF NONPROPORTIONAL CYCLICEXPERIMENTS OF IN738LC AT 850℃ |
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| 作者姓名： | M.
AbdelKarim M. Mizuno and N. Ohno\= |
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| 作者单位： | M.
AbdelKarim，M. Mizuno and N. Ohno\= Department of Mechanical Engineering，Nagoya
University Chikusaku，Nagoya 4648603，Japan |
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| 摘 要： | １．ＩｎｔｒｏｄｕｃｔｉｏｎＳｉｎｃｅｒａｔｃｈｅｔｉｎｇｂｅｈａｖｉｏｒｉｓｔｈｅａｃｕｍｕｌａｔｉｏｎｏｆｓｅｃｏｎｄａｒｙｄｅｆｏｒｍａｔｉｏｎｐｒｏｃｅｅｄｉｎｇｃｙｃｌｅｂｙｃｙｃｌｅ，ｉｔｉｓｎｏｔｅａｓｙｔｏｄｅｓｃｒｉｂｅｉｔａｃｃ...
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| 收稿时间： | 1999-02-25 |
| 修稿时间： | 1999-02-25 |
SIMULATION OF NONPROPORTIONAL CYCLIC EXPERIMENTSOF IN738LC AT 850 |
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| M.
AbdelKarim,M. Mizuno and N. Ohno\=.SIMULATION OF NONPROPORTIONAL CYCLIC EXPERIMENTSOF IN738LC AT 850[J].Acta Metallurgica Sinica(English Letters),1999,12(1):4-11. |
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| Authors: | Author M AbdelKarim M Mizuno and N Ohno\= |
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| Abstract: | In the previous paper, in order to
express steadystate ratchetting, the present s extended the cyclic plasticity model proposed by
Ohno and Wang (1993), and the validity of the extended model was discussed on the basis of
uniaxial ratchetting experiments of 316FR steel at room temperature. In the present paper, the
validity of the extended model is discussed further on the basis of nonproportional experiments
of IN738LC at 850 such as multiaxial ratchetting, multiaxial cyclic stress relaxation, circular
cyclic straining with strain hold, and so on. Predictions based on the OhnoWang model as well
as the ArmstrongFrederick model are also given for the sake of comparison. It is shown that the
extended model is capable of simulating the nonproportional experiments accurately, and
especially that the extended model can predict much less steadystate ratchetting than the
ArmstrongFrederick model. It is also shown that the extended model provides almost the same
predictions as the OhnoWang and th |
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| Keywords: | dynamic recovery OhnoWang model multiaxial ratchetting nonproportional loading IN738LCe ArmstrongFrederick model if ratchetting and mean stress relaxation are not significant |
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