scholarly journals Pattern and Direction of Microstrain in Q&T Steel Weld Joint

2019 ◽  
Vol 269 ◽  
pp. 02008
Author(s):  
Yurianto ◽  
Pratikto ◽  
Rudy Soenoko ◽  
Wahyono Suprapto ◽  
Sulardjaka
Keyword(s):  
Residual Stress ◽  
Weld Joint ◽  
Gas Metal Arc Welding ◽  
Butt Joint ◽  
Rolled Plate ◽  
Steel Weld ◽  
Metal Arc Welding ◽  
Steel Weld Joint ◽  
Before And After ◽  
Materials Used

The welded joint always contains the microstrain when welding is complete. The microstrain generates distortion and changes of the physical shape of the weld joint. The purpose of the study was to observe the pattern and direction of residual stress before and after welding Q900&T125 and Q900&T175 Steel. The materials used for this study is Hot Rolled Plate Steel made by Indonesia steel industry. Method of this study is 1. Q900&T125 and Q900&T125 Steel machined in V-butt joint. This joints weld by using manual gas metal arc welding, Q900&T125 and Q900&T125 Steel weld joint can be found. 2. Measuring the distance from the lattice planes before and after welding by using Neutron-Ray Diffraction. Then the microstrain can be found. By involving Poisson numbers and modulus of elasticity of material in microstrain obtained residual stress. All the pattern of microstrain is compressive stress and leads to the weld center.

Numerical Simulation and Experimental Investigation of Residual Stress in 06Cr19Ni10 Austenitic Stainless Steel Weld Joint with Effects of Strain-Strengthening

2016 ◽  
Vol 853 ◽  
pp. 204-208 ◽  
Author(s):  
Lan Qing Tang ◽  
Hui Fang Li ◽  
Xiao Xiao Wang ◽  
Cai Fu Qian
Keyword(s):  
Residual Stress ◽  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Weld Joint ◽  
Strengthening Effect ◽  
Steel Weld ◽  
Stainless Steel Weld ◽  
Steel Weld Joint ◽  
Austenitic Stainless Steel Weld ◽  
Strain Strengthening

In this paper, Finite Element Modeling (FEM) using Marc software was carried out to investigate the strain-strengthening effect on residual stress in 06Cr19Ni10 austenitic stainless steel weld joint made by MIG welding. The model prediction of residual stress was validated by X-ray Diffraction (XRD) method. It is found that there is a good agreement between the model predictions and the experimental results. The strain-strengthening can significantly improve the distribution of residual welding stress. Specifically in weld zone and the heat-affected zone (HAZ), residual stress decreases with increasing strain-strengthening level.

Effect of Different Filler Towards Welding of AA6061 Al Alloy by X-Ray CT Scan

2010 ◽  
Vol 146-147 ◽  
pp. 1402-1405 ◽  
Author(s):  
Che Lah Nur Azida ◽  
Azman Jalar ◽  
Norinsan Kamil Othman ◽  
Nasrizal Mohd Rashdi ◽  
Md Zaukah Ibel
Keyword(s):  
Aluminum Alloy ◽  
Ct Scan ◽  
Welded Joint ◽  
Gas Metal Arc Welding ◽  
Butt Joint ◽  
Al Alloy ◽  
X Ray ◽  
Metal Arc Welding ◽  
Joint Quality ◽  
Filler Metals

AA6061 Aluminum alloy welded joint using two different filler metals were studied by using X-ray CT-Scan. The filler metals ER 4043 and ER 5356 were used in this present work in order to investigate the effect of using different filler metals on the welded joint quality of AA 6061 aluminum alloy in welded zone microstructure. Gas metal arc welding (GMAW) technique and V grove butt joint with four layers and five passes welded joint were performed. From this investigation, it is found that AA6061 with ER 4043 showed less distribution of porosity compared to AA6061 with ER 5356 welded joint confirmed by X-ray Ct-Scan. The decreasing of porosities and presence of very fine grains in weld region area with ER 5356 compared to ER 4043 will be discussed in term of microstructure analysis.

scholarly journals Modeling, Prediction and Validation of Thermal Cycles, Residual Stresses and Distortion in Type 316 LN Stainless Steel Weld Joint made by TIG Welding Process

2014 ◽  
Vol 86 ◽  
pp. 767-774 ◽  
Author(s):  
K.C. Ganesh ◽  
M. Vasudevan ◽  
K.R. Balasubramanian ◽  
N. Chandrasekhar ◽  
S. Mahadevan ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Residual Stresses ◽  
Weld Joint ◽  
Welding Process ◽  
Tig Welding ◽  
Steel Weld ◽  
Thermal Cycles ◽  
Stainless Steel Weld ◽  
Steel Weld Joint ◽  
Modeling Prediction

Evaluation by FEM of the Influence of the Preheating and Post-Heating Treatments on Residual Stresses in Welding

2014 ◽  
Vol 627 ◽  
pp. 93-96 ◽  
Author(s):  
Raffaele Sepe ◽  
Enrico Armentani ◽  
Giuseppe Lamanna ◽  
Francesco Caputo
Keyword(s):  
Temperature Distribution ◽  
Residual Stresses ◽  
Gas Metal Arc Welding ◽  
Welding Process ◽  
Element Model ◽  
Butt Joint ◽  
Temperature Fields ◽  
Heating Process ◽  
Butt Weld ◽  
Metal Arc Welding

During the last few years various experimental destructive and non-destructive methods were developed to evaluate residual stresses. However it is impossible to obtain a full residual stress distribution in welded structures by means of experimental methods. This disadvantage can be solved by means of computational analysis which allows to determine the whole stress and strain fields in complex structures. In this paper the temperature distribution and residual stresses were determined in a single-pass butt joint welded by GMAW (Gas Metal Arc Welding) process by finite element model (FEM). A 3D finite parametric element model has been carried out to analyze temperature distribution in butt weld joints and thermo-mechanical analyses were performed to evaluate resulting residual stresses. Temperature fields have been investigated by varying an initial preheating treatment. Moreover the technique of “element birth and death” was adopted to simulate the process of filler metal addition The high stresses were evaluated, with particular regard to fusion zone and heat affected zone. The influence of preheating and post-heating treatment on residual stresses was investigated. The residual stresses decrease when preheating temperature increases. The maximum value of longitudinal residual stresses without pre-heating can be reduced about 12% and 38% by using the preheating and post-heating process respectively.

Property of WDB620 steel weld joint

2011 ◽  
Author(s):  
Yunchun Chen ◽  
Tianhui Zhang
Keyword(s):  
Weld Joint ◽  
Steel Weld ◽  
Steel Weld Joint

scholarly journals Numerical investigation of crack growth in AISI type 316LN stainless steel weld joint using GTN damage model

2019 ◽  
Vol 13 (1/2/3) ◽  
pp. 125
Author(s):  
N. Sai Deepak ◽  
C. Lakshmana Rao ◽  
S.A. Krishnan ◽  
G. Sasikala ◽  
Raghu V. Prakash
Keyword(s):  
Stainless Steel ◽  
Crack Growth ◽  
Weld Joint ◽  
Damage Model ◽  
Steel Weld ◽  
Stainless Steel Weld ◽  
Aisi Type ◽  
Steel Weld Joint ◽  
Gtn Damage Model ◽  
Type 316Ln Stainless Steel
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