Hydrogen-induced cold cracking in heat-affected zone of low-carbon high-strength steel

2014 ◽  
Vol 94 (12) ◽  
pp. 764-771 ◽  
Author(s):  
Liangyun Lan ◽  
Xiangwei Kong ◽  
Zhiyong Hu ◽  
Chunlin Qiu
Keyword(s):  
Heat Affected Zone ◽  
High Strength Steel ◽  
High Strength ◽  
Cold Cracking ◽  
Low Carbon

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.

М/А-Constituent in Bainitic Low Carbon High Strength Steel Structure. Part 1

Metallurgist ◽  
2018 ◽  
Vol 62 (7-8) ◽  
pp. 772-782 ◽  
Author(s):  
A. A. Kichkina ◽  
M. Yu. Matrosov ◽  
L. I. Éfron ◽  
D. A. Ringinen ◽  
I. V. Lyasotskii ◽  
...  
Keyword(s):  
High Strength Steel ◽  
Steel Structure ◽  
High Strength ◽  
Low Carbon

Structure and properties of a low carbon Cu bearing high strength steel

2005 ◽  
Vol 396 (1-2) ◽  
pp. 320-332 ◽  
Author(s):  
A. Ghosh ◽  
B. Mishra ◽  
S. Das ◽  
S. Chatterjee
Keyword(s):  
High Strength Steel ◽  
High Strength ◽  
Structure And Properties ◽  
Low Carbon

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.

The Influence of Thermomechanical Controlled Processing on Bainite Formation in Low Carbon High Strength Steel

2014 ◽  
Vol 783-786 ◽  
pp. 21-26
Author(s):  
Xiao Jun Liang ◽  
Ming Jian Hua ◽  
Anthony J. DeArdo
Keyword(s):  
Mechanical Properties ◽  
High Strength Steel ◽  
High Strength ◽  
Manganese Steel ◽  
Low Carbon ◽  
High Manganese ◽  
Bainite Transformation ◽  
High Manganese Steel ◽  
Cooling Rates ◽  
Controlled Processing

Thermomechanical controlled processing is a very important way to control the microstructure and mechanical properties in low carbon, high strength steel. This is especially true in the case of bainite formation, where the complexity of the austenite-bainite transformation makes the control of the processing important. In this study, a low carbon, high manganese steel containing niobium was investigated to better understand the roles of austenite conditioning and cooling rates on the bainitic phase transformation. Specimens were compared with and without deformation, and followed by seven different cooling rates ranging between 0.5°C/s and 40°C/s. The CCT curves showed that the transformation behaviors and temperatures are very different. The different bainitic microstructures which varied with austenite deformation and cooling rates will be discussed.

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