This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Performance Evaluation of GMAW Welds for Four Advanced High Strength Steels
Technical Paper
2005-01-0904
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
This paper investigates the characteristics of GMAW of various sheet steels grades ranging from HSLA, dual phase, to martensitic. From the arc welding point of view, the dual phase and martensitic steels behave similarly to conventional high strength steels. Regarding the properties of GMAW joints, the static and dynamic mechanical testing were conducted and compared along with the weld metal microhardness and microstructure. Results show that while the strength of the sheet steel weld, in general increases with the base material strength, Joint Efficiency, defined as the ratio of the strength of joint to the strength of the base metal, decreases with the increase of martensite fraction in the sheet steel. Martensitic steels, especially, exhibits reduced weld strength due to softening of the HAZ. However, fatigue strength of these steels is not adversely affected by the softened HAZ, and is insensitive to the strength of the steel. The hardness distribution in weldments can significantly affect the static performance of the welds and is dependent on the steel chemistry, steel processing and filler metal.
Recommended Content
Authors
Citation
Yan, B., Lalam, S., and Zhu, H., "Performance Evaluation of GMAW Welds for Four Advanced High Strength Steels," SAE Technical Paper 2005-01-0904, 2005, https://doi.org/10.4271/2005-01-0904.Also In
References
- Yan B. “Fatigue Behavior of Advanced High Strength Steels For Automotive Applications” The 44th MWSP Conference Proceedings 2002 509 516
- Yan B. Ispat Inland Inc. Research Department Internal Memorandum to D. Urban “Fatigue Behavior of Spot Welds for UHSS in Comparison with DQSK” August 6 2001
- Fisher J. W. “Improved Performance through Large Scale Dynamic Testing of Structures” International Conference on Performance of Dynamically Loaded Weld Structures”, WRC Proceedings 1997 1 21
- Dong P. “Master S-N Curve Method for Fatigue Evaluation of Welded Components” WPC Bulletin 474 August 2002
- Honeycombe Robert Bhadeshia, H. K. D. H. “Steels, Microstructure and properties” Edward Arnold publications London 1995