scholarly journals Mechanisms of grain-boundary liquation cracking in weld heat-affected zone of high strength steel (1st report)

1973 ◽  
Vol 42 (10) ◽  
pp. 966-977 ◽  
Author(s):  
Hiroshi Tamura ◽  
Takehiko Watanabe
Keyword(s):  
Grain Boundary ◽  
Heat Affected Zone ◽  
High Strength Steel ◽  
High Strength ◽  
Liquation Cracking ◽  
Weld Heat

Welding of Fe-Al Intermetallic Compound and Steel by SPS Technology

2012 ◽  
Vol 581-582 ◽  
pp. 582-585
Author(s):  
Guo Dong Zhang ◽  
Ya Dong Xiao ◽  
Nian Liu ◽  
Min Hong
Keyword(s):  
Intermetallic Compound ◽  
Base Metal ◽  
Heat Affected Zone ◽  
High Strength Steel ◽  
Chemical Potential ◽  
High Strength ◽  
Micro Hardness ◽  
Axial Pressure ◽  
Welding Joint ◽  
Short Period

The welding between Fe-Al intermetallic compound and high-strength steel was done via SPS technology. Microstructure, elements concentration and micro-hardness of welding joint were examined. The results indicated that there was no obvious welding heat-affected zone in both Fe-Al intermetallic compound and high-strength steel. The HAZ microstructures of high-strength steel were mainly martensite. In Fe-Al intermetallic compound, the grain size of heat-affected zone was larger than that of base metal and the density of heat-affected zone was lower than that of base metal. Besides, the grains of base metal had deformation phenomena. The welding joint had steady performance and the connection was reliable. Under the influence of chemical potential differences, unidirectional impulses discharge current and axial pressure, elements diffused perfectly in a short period of time.

Analysis on Welding Performance of the WH80 Steel Used in the Hydraulic Support

2011 ◽  
Vol 225-226 ◽  
pp. 111-114
Author(s):  
Lian Min Cao ◽  
Guo Xiu Su ◽  
Qing Liang Zeng ◽  
Xing Yuan Xiao
Keyword(s):  
Heat Affected Zone ◽  
High Strength Steel ◽  
Arc Welding ◽  
High Strength ◽  
Hardness Test ◽  
Bend Test ◽  
Hydraulic Support ◽  
Good Material

This paper mainly has carried on the analysis to the welding performance of high strength steel WH80, through the stretch and the bend test of manual welding rod, arc welding, the slanting y bevel weld crack test and the highest hardness test in welding heat-affected zone. It indicates that the WH80 steel has the good welding performance and is good material for hydraulic support.

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