A Method to Evaluate the Temper Embrittlement from Step Cooling Test

Han Kui Wang; Tong Xu; Bin An Shou

doi:10.4028/www.scientific.net/MSF.850.457

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HomeMaterials Science ForumMaterials Science Forum Vol. 850A Method to Evaluate the Temper Embrittlement from...

A Method to Evaluate the Temper Embrittlement from Step Cooling Test

Abstract:

A new mathematic approach was proposed to evaluate the temper embrittlement from the step cooling test. The approach was composed of two parts. A nonlinear model, which acted as weight factor, was used to fit the variance at different test temperatures, and the maximum likelihood method was used to determine the curve parameters. In the ASME specification SA-542, there was no instruction to be provided on how to determine the transition temperature from the test results. This method is adopted as an additional supplementary requirement to assess the temper embrittlement of Chromium-Molybdenum steel.

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Periodical:

Materials Science Forum (Volume 850)

Pages:

457-465

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.850.457

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Online since:

March 2016

Authors:

Han Kui Wang, Tong Xu, Bin An Shou

Keywords:

Burr Distribution, Ductile-To Brittle Transition, Impact Energy Fitting, Step-Cooling

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