Numerical simulation on fracture resistance and factors affecting toughness for welded joint of low-alloy steel

2019 ◽  
Vol 127 ◽  
pp. 8-16 ◽  
Author(s):  
Longfei Zhao ◽  
Xiangyu Guo ◽  
Haichao Cui ◽  
Fenggui Lu
Keyword(s):  
Numerical Simulation ◽  
Alloy Steel ◽  
Fracture Resistance ◽  
Welded Joint ◽  
Low Alloy Steel ◽  
Factors Affecting

Numerical simulation of creep damage for low alloy steel welded joint considering as-welding residual stress

2012 ◽  
Vol 242 ◽  
pp. 26-33 ◽  
Author(s):  
Guodong Zhang ◽  
Changyu Zhou ◽  
Zhaoxi Wang ◽  
Fei Xue ◽  
Yanfen Zhao ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Residual Stress ◽  
Alloy Steel ◽  
Welded Joint ◽  
Creep Damage ◽  
Welding Residual Stress ◽  
Low Alloy Steel

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

Numerical Simulation on Interface Crack Propagation for Non-Uniform Welded Joint

2012 ◽  
Vol 602-604 ◽  
pp. 2065-2068
Author(s):  
Xiang Hong Zhang ◽  
Can Duo Shen ◽  
Chang Qing Sun
Keyword(s):  
Numerical Simulation ◽  
Finite Element Method ◽  
Finite Element ◽  
Composite Material ◽  
Normal Stress ◽  
Fracture Resistance ◽  
Welded Joint ◽  
The Finite Element Method ◽  
Stress Criterion ◽  
Maximum Normal Stress

Maximum normal stress criterion can be used to determine the cracking angle in the uniform and non-uniform zone. According to this theory, the propagating process of the crack in non-uniform composite material is simulated based on the finite element method. The results show that the crack advances wave-like and basically along the direction perpendicular to the maximum normal stress, which is of great guiding significance for the fracture resistance of such kind of structure.

Evaluation of Microstructure at Interfaces of Welded Joint Between Low Alloy Steel and Stainless Steel

2019 ◽  
Vol 50 (6) ◽  
pp. 2784-2797
Author(s):  
K. Ravikiran ◽  
G. Das ◽  
Suranjit Kumar ◽  
P. K. Singh ◽  
K. Sivaprasad ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Alloy Steel ◽  
Welded Joint ◽  
Low Alloy Steel

Microstructure and Mechanical Properties of Submerged Arc Welding Filled with Ni Wire Dissimilar Joints Comprising SUS304 and Q245R

2014 ◽  
Vol 936 ◽  
pp. 1780-1785
Author(s):  
Peng Xian Zhang ◽  
Peng Zhao ◽  
Yan Quan Cui
Keyword(s):  
Mechanical Properties ◽  
Weld Metal ◽  
Alloy Steel ◽  
Arc Welding ◽  
Molten Pool ◽  
Welded Joint ◽  
Submerged Arc Welding ◽  
Low Alloy Steel ◽  
Allocation Process ◽  
Submerged Arc

Aim at the issue that the bending crack is easy to generate inside dissimilar welded joint of low alloy steel and stainless steel, a new process of submerged arc welding filled with Ni wire is put forward. The influence mechanism of filling quantity of Ni wire to the joint of microstructure evolutions and mechanical properties is mainly explored based on the contrast test of non-filling Ni wire and three different filling speeds of Ni wire. The experiment results indicate that, the filling process of Ni wire supplies austenite forming element, and alters heat allocation process of molten pool. The filling quantity of Ni wire is the quantitative parameter, it is used to control the transition width between low alloy steel and weld metal, also to adjust the peak temperature and holding time at elevated temperature of molten pool. When the value of the filling quantity of Ni wire is determined, the problem of bending crack in the fusion zone of low alloy steel can be solved, and also the overheat damage can be eliminated. At the same time, the grains of weld metal and heat affected zone are refined. And on this basis the plasticity, toughness and microhardness of welded joint can be guaranteed.

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