Title: Methods of making bainitic steel materials

Abstract

Methods of making bainitic steels may involve austenitizing a quantity of steel by exposing the quantity of steel to a first temperature. A composition of the quantity of steel may be configured to impede formation of non-bainite ferrite, pearlite, and Widmanstatten ferrite. The quantity of steel may be heat-treated to form bainite by exposing the quantity of steel to a second, lower temperature. The second, lower temperature may be stabilized by exposing the quantity of steel to the second, lower temperature in the presence of a thermal ballast.

Inventors:

Bakas, Michael Paul; Chu, Henry Shiu-Hung; Zagula, Thomas Andrew; Langhorst, Benjamin Robert

Issue Date:

2018-01-16

Research Org.:

Idaho National Lab. (INL), Idaho Falls, ID (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1417342

Patent Number(s):

9869000

Application Number:

14/566,455

Assignee:

Battelle Energy Alliance, LLC (Idaho Falls, ID)

Patent Classifications (CPCs):

C - CHEMISTRY C21 - METALLURGY OF IRON C21D - MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS

C - CHEMISTRY C22 - METALLURGY C22C - ALLOYS

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C - CHEMISTRY C21 - METALLURGY OF IRON C21D - MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS

C21D6/002 - {containing Cr

C - CHEMISTRY C22 - METALLURGY C22C - ALLOYS

C22C38/06 - containing aluminium

C - CHEMISTRY C21 - METALLURGY OF IRON C21D - MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS

C21D6/008 - {containing Si}

C - CHEMISTRY C22 - METALLURGY C22C - ALLOYS

C22C38/30 - with cobalt
C22C38/04 - containing manganese

C - CHEMISTRY C21 - METALLURGY OF IRON C21D - MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS

C21D2211/002 - Bainite
C21D1/34 - Methods of heating
C21D6/005 - {containing Mn}

C - CHEMISTRY C22 - METALLURGY C22C - ALLOYS

C22C38/22 - with molybdenum or tungsten
C22C38/02 - containing silicon

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DOE Contract Number:  

AC07-05ID14517

Resource Type:

Patent

Resource Relation:

Patent File Date: 2014 Dec 10

Country of Publication:

United States

Language:

English

Subject:

36 MATERIALS SCIENCE