Improvement of weldability and evaluation criteria for high-strength pipe steel heat-affected zone reliability

Metallurgist ◽  
2012 ◽  
Vol 55 (11-12) ◽  
pp. 925-934 ◽  
Author(s):  
I. L. Permyakov ◽  
I. I. Frantov ◽  
A. N. Bortsov ◽  
K. Yu. Mentyukov
Keyword(s):  
Heat Affected Zone ◽  
Pipe Steel ◽  
Evaluation Criteria ◽  
High Strength ◽  
Steel Heat

Effect of Microstructure on High-Strength Low-Alloy Steel Welded Joint Toughness with Simulation of Heat-Affected Zone Coarse-Grained Area

Metallurgist ◽  
2021 ◽  
Vol 64 (9-10) ◽  
pp. 875-884
Author(s):  
K. G. Vorkachev ◽  
P. P. Stepanov ◽  
L. I. Éfron ◽  
M. M. Kantor ◽  
A. V. Chastukhin ◽  
...  
Keyword(s):  
Alloy Steel ◽  
Heat Affected Zone ◽  
Welded Joint ◽  
High Strength ◽  
Coarse Grained ◽  
Low Alloy Steel ◽  
Effect Of Microstructure

Study of lath morphology bainite in high-strength pipe steel

2013 ◽  
Vol 55 (5-6) ◽  
pp. 287-293 ◽  
Author(s):  
N. G. Kolbasnikov ◽  
O. G. Zotov ◽  
A. I. Shamshurin ◽  
A. A. Luk’yanov
Keyword(s):  
Pipe Steel ◽  
High Strength ◽  
Lath Morphology

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.

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