Invention Grant
- Patent Title: Method for homogenizing steel compositions
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Application No.: US15609377Application Date: 2017-05-31
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Publication No.: US10738367B2Publication Date: 2020-08-11
- Inventor: Micah J. Hackett
- Applicant: TerraPower, LLC
- Applicant Address: US WA Bellevue
- Assignee: TerraPower, LLC
- Current Assignee: TerraPower, LLC
- Current Assignee Address: US WA Bellevue
- Main IPC: C21D9/46
- IPC: C21D9/46 ; C21C5/52 ; C21D8/02 ; C21D1/42 ; C21D1/26 ; C22C38/46 ; C22C38/44 ; C22C38/42 ; C22C38/04 ; C22C38/02 ; C22C38/00 ; C21D8/04 ; C21C7/10 ; C21D1/28 ; C21D9/70

Abstract:
This disclosure describes methods for improving the performance and consistency of steels by closely controlling the initial homogenization of steel compositions prior to hot working. Experimental data is provided illustrating that the traditional austenitization techniques do not take into account diffusion of the various components within a steel composition and, as such, may not completely homogenize the steel composition. In the methods described in this disclosure, the initial step of austenitizing the steel ingot is altered to achieve a more homogenous distribution of the different components throughout the ingot. The improved method includes heating the steel composition to a temperature within the upper half of the pure austenitic phase temperature range and maintaining the steel composition at that temperature for a period of time determined based on the diffusivity in the austenitic phase of the steel composition of at least one constituent of the steel.
Public/Granted literature
- US20180245174A1 METHOD FOR HOMOGENIZING STEEL COMPOSITIONS Public/Granted day:2018-08-30
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