Heat Affected Zone Softening Susceptibility Test

2021 ◽  
Author(s):  
Aaron Dinovitzer ◽  
Robert Lazor ◽  
Marie Quintana ◽  
Darren Begg
Keyword(s):  
Heat Affected Zone ◽  
Susceptibility Test ◽  
Heat Affected Zone Softening

Gas metal arc welding of XPF800 steel for automotive industry: Microstructural evaluation and mechanical properties investigation

2021 ◽  
pp. 146442072110567
Author(s):  
Emre Korkmaz ◽  
Cemal Meran
Keyword(s):  
Mechanical Properties ◽  
Base Metal ◽  
Automotive Industry ◽  
Heat Affected Zone ◽  
Arc Welding ◽  
Gas Metal Arc Welding ◽  
Charpy Impact ◽  
Optical Microscope ◽  
Metal Arc Welding ◽  
Heat Affected Zone Softening

In this study, the effect of gas metal arc welding on the mechanical and microstructure properties of hot-rolled XPF800 steel newly produced by TATA Steel has been investigated. This steel finds its role in the automotive industry as chassis and seating applications. The microstructure transformation during gas metal arc welding has been analyzed using scanning electron microscope, optical microscope, and energy dispersive X-ray spectrometry. Tensile, Charpy impact, and microhardness tests have been implemented to determine the mechanical properties of welded samples. Acceptable welded joints have been obtained using heat input in the range of 0.28–0.46 kJ/mm. It has been found that the base metal hardness of the welded sample is 320 HV0.1. On account of the heat-affected zone softening, the intercritical heat-affected zone hardness values have diminished ∼20% compared to base metal.

A study on heat affected zone softening in resistance spot welded dual phase steel by nanoindentation

2009 ◽  
Vol 45 (6) ◽  
pp. 1638-1647 ◽  
Author(s):  
Victor Hugo Baltazar Hernandez ◽  
Sushanta Kumar Panda ◽  
Yasuaki Okita ◽  
Norman Y. Zhou
Keyword(s):  
Heat Affected Zone ◽  
Dual Phase Steel ◽  
Dual Phase ◽  
Resistance Spot ◽  
Heat Affected Zone Softening ◽  
Spot Welded

Subcritical heat affected zone softening in hot-stamped boron steel during resistance spot welding

2018 ◽  
Vol 155 ◽  
pp. 170-184 ◽  
Author(s):  
Ying Lu ◽  
Andrea Peer ◽  
Tim Abke ◽  
Menachem Kimchi ◽  
Wei Zhang
Keyword(s):  
Heat Affected Zone ◽  
Resistance Spot Welding ◽  
Spot Welding ◽  
Boron Steel ◽  
Resistance Spot ◽  
Heat Affected Zone Softening

Modelling of Heat Affected Zone Softening in Laser Welding of M1500

2015 ◽  
Author(s):  
Hongze Wang ◽  
Yansong Zhang
Keyword(s):  
Temperature Distribution ◽  
Laser Welding ◽  
Heat Affected Zone ◽  
High Strength Steel ◽  
High Strength ◽  
Element Model ◽  
Hardness Measurement ◽  
Vehicle Body ◽  
Ultra High Strength Steel ◽  
Heat Affected Zone Softening

With the implementation of more stringent emissions standards, ultra-high strength steel has been increasingly used in vehicle body to reduce the carbon emissions, but softening in the heat affected zone is one of the most serious issues faced with in welding of this steel. In this paper, a finite element model (FEM) was developed to estimate temperature distribution in laser welding of ultra-high strength steel M1500 and a carbon diffusion model was then developed to estimate the martensite tempering transformation in the softening zone based on the simulated temperature distribution results. Maximum softening degree, minimum hardness point position and boundary of the softening zone were estimated and validated by hardness measurement experiments. This work provides a better understanding of the mechanism for heat affected zone softening in laser welding of ultra-high strength steel.

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