Investigation of Welding Thermal Strains in High Strength Quenched and Tempered Steel.

reportActive / Technical Report | Accession Number: ADA075251 | Open PDF

Abstract:

Previous studies of transient thermal strains during welding of high strength quenched and tempered steels are discussed. Data on the transient strain and temperature response during welding experiments on HY-130 and low carbon steel are presented. The experiments consisted of unrestrained, multipass, butt welds in one inch thick plates. The experimental results are compared to analytical predictions by the MIT computer program for the one dimensional analysis of thermal stresses and metal movement during welding. Results indicate that the program accurately predicts the temperature distribution present during welding. However, the program fails to accurately predict the transient strain response except far from the weld line where transverse strains are insignificant. Therefore, the one-dimensional program has limited usefulness for predicting response in thick sections. Recommendations are made which include a comparison of results with a two-dimensional computer analysis and a metallurgical characterization of both the weld metal and the base metal near the weld. Author

Author(s):
Lipsey, Mark D.
Author Organization(s):
NAVAL POSTGRADUATE SCHOOL MONTEREY CA
Descriptive Note:
Master's thesis,
Pagination:
0132

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Subject Terms
Joint Capability Areas:
JCA_3.1.1_Maneuver to Engage; JCA_3.1_Maneuver; JCA_3_Force Application; JCA_1.2.7_Experimentation; JCA_5_Command and Control; JCA_5.3_Planning; JCA_4.6_Engineering; JCA_1_Force Support; JCA_1.2_Force Preparation; JCA_1.2.5_Lessons Learned
Modernization Areas:
Quantum Science and Computing
Communities of Interest:
Energy and Power Technologies
Descriptor(s):
*STEEL, *WELDS, *WELDING, COMPUTER PROGRAMS, THICKNESS, EXPERIMENTAL DESIGN, STRAIN(MECHANICS), QUENCHING, HEAT TREATMENT, THERMAL ANALYSIS, HIGH STRENGTH, PLATES, THERMAL STRESSES, TEMPERING
Field(s)/Group(s):
Metallurgy and Metallography, Fabrication Metallurgy, Mechanics
Keyword(s):
Welding thermal strains, Thermal strains, Transient strain, Steel hy 130, Butt welds, Computer analysis
Report Date:
1978 Jun 01