The Tempering of Martensite

reportActive / Technical Report | Accession Number: ADA950514 | Open PDF

Abstract:

The time-temperature relation for the loss of tetragonality of martensite was determined for a plain carbon steel .95 C.. The time and temperature are related through a heat of activation relation. This heat of activation is of the order of 34,000 cal.gm. mol. These data indicate that appreciable tempering of the first formed martensite can occur with moderate cooling rates upon quenching if the Mg temperature is significantly above room temperature. Graphs are presented for estimating the amount of tempering, in the steel studied, during any tempering treatment, as well as during quenching.

Author(s):
Buffum, D. C. ; Hollomon, J. H. ; Jaffe, L. D.
Author Organization(s):
WATERTOWN ARSENAL LABS MA WATERTOWN ARSENAL
Descriptive Note:
Technical Report
Pagination:
0025

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release;

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
WAL-154/12
Monitor Series:
WAL-154/12
 Subject Terms
Joint Capability Areas:
JCA_3.2_Engagement; JCA_3_Force Application; JCA_3.2.1_Kinetic Means; JCA_5_Command and Control
Modernization Areas:
Fully Networked C3
Communities of Interest:
Air Platforms
Descriptor(s):
Martensite, Tempering, Crystal structure, Carbon steels, Crystal lattices, Temperature, Time intervals, Heat of activation, Cooling, Quenching, Planar structures, Range (Distance), X ray diffraction, Line spectra
Keyword(s):
U A reports
Report Date:
1945 Nov 01
Creation Date:
2019 Jun 14