Journal ArticleDOI
Microstructure and mechanical properties of laser welded S960 high strength steel
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In this article, the microstructure, microhardness, and tensile properties of 8mm thick hot rolled and quenched S960 high strength low alloy (HSLA) steel plates were welded using a 16kW fiber laser system.About:
This article is published in Materials & Design.The article was published on 2015-11-15. It has received 95 citations till now. The article focuses on the topics: Heat-affected zone & Laser beam welding.read more
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Comparison of microstructure and mechanical properties of ultra-narrow gap laser and gas-metal-arc welded S960 high strength steel
TL;DR: In this article, the microstructural characteristics and mechanical properties, including micro-hardness, tensile properties, three-point bending properties and Charpy impact toughness at different test temperatures of 8mm thick S960 high strength steel plates were investigated following their joining by multi-pass ultra-narrow gap laser welding (NGLW) and gas metal arc welding (GMAW) techniques.
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Effect of cooling rate on microstructure, inclusions and mechanical properties of weld metal in simulated local dry underwater welding
TL;DR: In this article, the effect of cooling rate on microstructure, inclusions and mechanical properties of the weld metal was investigated by optical microscope, scanning electron microscope, transmission electron microscope and mechanical testing.
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Effects of heat input on the mechanical properties of butt-welded high and ultra-high strength steels
Mohsen Amraei,Mohsen Amraei,Antti Ahola,Shahriar Afkhami,Timo Björk,Amin Heidarpour,Xiao Ling Zhao +6 more
TL;DR: In this paper, the mechanical properties of butt-welded thin plates made of S700, S960 and S1100 steels under various heat inputs (HI) are investigated and the microstructure of the heat affected zones (HAZ) of the weldments are closely examined using scanning electron microscopy (SEM).
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Metallurgical and mechanical properties of laser welded high strength low alloy steel.
TL;DR: Tensile results suggested that the laser welding process had improved the weld strength even without any weld preheat treatment and also the fractography of the tensile fractured samples showed the ductile mode of failure.
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Comparative study of the SCC behavior of E690 steel and simulated HAZ microstructures in a SO2-polluted marine atmosphere
TL;DR: In this paper, slow strain rate tensile (SSRT) tests were implemented to investigate the stress corrosion cracking (SCC) behavior of E690 steel and the simulated HAZ microstructures in a SO 2 -polluted marine atmosphere.
References
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Hybrid fiber laser – Arc welding of thick section high strength low alloy steel
TL;DR: In this paper, a hybrid fiber laser arc welding system was successfully applied to fully penetrate 9.3mm thick butt joints using a single-pass process through optimization of the groove shape, size and processing parameters.
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An assessment of microstructure, hardness, tensile and impact strength of friction stir welded ferritic stainless steel joints
TL;DR: In this paper, the structure and mechanical characterization of a friction stir welded 409M ferritic stainless steel joint were carried out using optical microscopy, microhardness testing, transverse tensile, impact and bend tests were performed.
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Charpy impact energy, fracture toughness and ductile–brittle transition temperature of dual-phase 590 Steel
Yuh J. Chao,J.D. Ward,R.G. Sands +2 more
TL;DR: In this article, the results from Charpy V-Notch impact tests on dual phase 590 (DP590) steel, which belongs to the family of advanced high strength steels (AHSS), were presented.
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Analysis of microstructural evolution during friction stir welding of ultrahigh-strength steel
TL;DR: In this paper, the phase transformation was governed by severe plastic deformation in the austenitic region followed by cooling, and the strain rate and peak temperature played key roles in controlling the prior-austenitic grain size and were correlated to the Zener-Hollomon parameter.