Steel alloys with lower bainite microstructures for use in railroad cars and track

Steele, Roger King

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Steel alloys with lower bainite microstructures for use in railroad cars and track

2002-01-01
By Steele, Roger King

File Language:

English

Details

Creators:

Steele, Roger King
Corporate Creators:

John A. Volpe National Transportation Systems Center (U.S.)
Corporate Contributors:

United States. Federal Railroad Administration. Office of Research and Development ; Metallurgical Consulting Services, Ltd.
Subject/TRT Terms:
Publication/ Report Number:

DOT-VNTSC-FRA-98-11 ; DOT-FRA-ORD-01-15 ; NTIS-PB2002104690
Resource Type:

Research Paper
Geographical Coverage:

United States
TRIS Online Accession Number:

921339
Edition:

Final report
Corporate Publisher:

United States. Federal Railroad Administration. Office of Research and Development
NTL Classification:

NTL-RAIL TRANSPORTATION-RAIL TRANSPORTATION
Abstract:

In-line hardening of railroad rails to produce a very fine pearlite microstructure has become a commercial reality. A question that this report seeks to answer is whether or not it is possible to find an alloy composition that will permit the development of lower bainite microstructures by in-line hardening in rails, wheels, and tank car plate. The application of the in-line hardening process becomes more difficult in the production of lower bainite microstructures because of the need to quench in a controlled fashion to lower “isothermal” transformation temperatures. Use of the computer program SteCalTM has suggested that the addition of molybdenum with boron will achieve the needed development of a bainite nose accompanied by suppression of the pearlite transformation. This approach appears to be applicable to rails and tank car plates. It is not clear, however, that wheels, which ; can undergo rapid heating and quenching during extreme service braking, would benefit from the same approach.
Format:

PDF
Funding:

R-8009/RR-819
Download URL:

https://rosap.ntl.bts.gov/view/dot/8474/dot_8474_DS1.pdf
File Type:

[PDF - 3.00 MB]
Collection(s):

Volpe Center ; Federal Railroad Administration
Main Document Checksum:

urn:sha256:a2d53fd7a37abc195b27813c7e315c6760031d72bab31098f5dac5e67bfe2977

File Language:

English

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