Tetsu-to-Hagane
Online ISSN : 1883-2954
Print ISSN : 0021-1575
ISSN-L : 0021-1575
Superplastic Behaviour of Powder-Consolidated and Rolled Mod.IN-100 Sheet
Yasunori TORISAKAYoshinori NAKAZAWAMatsuo MIYAGAWA
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1986 Volume 72 Issue 10 Pages 1567-1574

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Abstract

The powder of nickel-base superalloy Mod. IN-100 has been consolidated by hot isostatic pressing and recrystallized by rolling up to 80% at 1 123 K and subsequent annealing at 1 423 K. The superplastic behaviour of alloy sheets prepared by above processing has been investigated in the temperature range of 1 223-1 423 K and over a range of strain rates from 2.5×10-4 to 2.5×10-2 s-1.
The Inσ vs. Inε curves were obtained and it was shown that the conditions obtaining the maximum strain-rate sensitivity index m changed from the constant strain rate at temperatures above 1 323 K to the constant flow stress below 1 323 K, so that the Inσ vs. Inε curves were possible to divide into six regions according to the deformation behaviour.

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© The Iron and Steel Institute of Japan
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