Constitutive Characteristic of Hot Deformation for Spray Formed Superalloy GH738
2013 ◽
Vol 747-748
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pp. 569-574
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Keyword(s):
The hot deformation behaviors of spray formed superalloy GH738 were investigated by using of Gleeble-3500 simulator in the temperature range of 950~1200, with a strain rate of 0.13~6.5s-1 and reduction of 50%. The corresponding flow curves were determined and hot deformed microstructures were observed. The results showed that the flow stress decreased with increasing deformation temperature or decreasing strain rate. A full dynamic recrystallization microstructures with fine-equiaxed grains were obtained at the temperature of 1100~1150 and strain rate of 2.6~6.5s-1. The hot deformation activation energy Q was 580.81kJ.mol-1, and the constitutive equation was derived by means of linear regression.
2008 ◽
Vol 575-578
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pp. 164-168
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Keyword(s):
Keyword(s):
2011 ◽
Vol 415-417
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pp. 1147-1152
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2014 ◽
Vol 2014
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pp. 1-7
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2014 ◽
Vol 1058
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pp. 165-169
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2019 ◽
Vol 51
(1)
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pp. 467-481
Keyword(s):
2013 ◽
Vol 747-748
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pp. 703-708
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2011 ◽
Vol 291-294
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pp. 635-639
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