Mechanical Properties at Elevated Temperatures of an S304H-Type Austenitic Stainless Steel Processed by Warm Rolling

Zhanna Yanushkevich; Andrey Belyakov; Rustam Kaibyshev

doi:10.4028/www.scientific.net/AMR.922.844

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Mechanical Properties at Elevated Temperatures of an S304H-Type Austenitic Stainless Steel Processed by Warm Rolling

Abstract:

The effect of multiple warm to hot rolling in the temperature interval of 673 – 1273 K on the microstructures and mechanical properties of an S304H-type austenitic stainless steel was studied. The structural changes during multiple rolling are characterized by the elongation of original grains towards the rolling direction and the development of new fine grains. The average spacing between high-angle boundaries in the transverse section of the rolled samples decreases from about 0.95 to 0.4 μm with decrease in the rolling temperature from 1273 to 773 K. The multiple rolling leads to significant strengthening as revealed by tensile tests at ambient and elevated temperatures. The offset yield strength evaluated at ambient temperature increased from 480 to 1120 MPa, while the rolling temperature decreased from 1273 to 673 K. The effect of the rolling temperature on the strength becomes less pronounced with an increase of the temperature of tensile tests.

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Periodical:

Advanced Materials Research (Volume 922)

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844-849

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https://doi.org/10.4028/www.scientific.net/AMR.922.844

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Online since:

May 2014

Authors:

Zhanna Yanushkevich*, Andrey Belyakov, Rustam Kaibyshev

Keywords:

Austenitic Stainless Steel, Multiple Rolling, Offset Yield Strength, Ultimate Tensile Strength (UTS)

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