Properties of weld metal in copper-low-carbon steel joints at elevated temperatures and their thermal fatigue resistance

1986 ◽  
Vol 18 (3) ◽  
pp. 292-298
Author(s):  
S. K. Pavlyuk ◽  
A. P. Rotach ◽  
A. V. Vecher
Keyword(s):  
Carbon Steel ◽  
Weld Metal ◽  
Fatigue Resistance ◽  
Thermal Fatigue ◽  
Elevated Temperatures ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
Thermal Fatigue Resistance ◽  
Steel Joints

Selecting the Parameters for Brazing 08 Steel with Pure Copper Solder Paste

2010 ◽  
Vol 426-427 ◽  
pp. 432-435
Author(s):  
De Gong Chang ◽  
J. Zhang ◽  
M.L. Lv
Keyword(s):  
Carbon Steel ◽  
Filler Metal ◽  
Pure Copper ◽  
Low Carbon Steel ◽  
Solder Paste ◽  
Low Carbon ◽  
Technical Parameters ◽  
And Performance ◽  
Steel Joints ◽  
The Ideal

The larger variation of the construction and performance of the low-carbon steel joints was caused by the high temperature of the puddle welding of the joint. Therefore, the braze welding rather than the puddle welding was applied to the welding production of low-carbon steel. The 08 steel parts were joined in a furnace using pure copper solder paste as brazing filler metal. According to the obtained results, the ideal technical parameters are as follow: brazing temperature: 1100-1150°C; holding time: 5-10min; joint clearance: 0.03-0.05mm.

Comparison Study of Oxidation Behavior of Low Carbon Steel at Elevated Temperatures

2014 ◽  
Vol 1025-1026 ◽  
pp. 504-508 ◽  
Author(s):  
Sang An Ha ◽  
Dong Kyun Kim ◽  
Woo Jin Lee ◽  
Chang Yong Kang ◽  
Kwon Hoo Kim ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Oxidation Rate ◽  
Cyclic Oxidation ◽  
Oxidation Behavior ◽  
Elevated Temperatures ◽  
Low Carbon Steel ◽  
Comparison Study ◽  
Low Carbon ◽  
Increasing Temperature ◽  
Continuous Oxidation

Comparison study of oxidation behavior of low carbon steel was conducted at the temperature range of 500°C to 700°C under a 0.2 atm oxygen pressure by continuous and discontinuous oxidation methods. Oxidation rate of both cases was found to be increased with increasing temperature from 500°C to 700°C and obeyed parabolic rate law. In addition, activation energy for the continuous oxidation of steel was found to be a 164.8 kJ/mole, which means that oxidation rate is proportionally dependant on temperature. In case of cyclic oxidation, the oxidation rate was shown to faster than continuous oxidation at all temperatures due to direction oxidation through spallation of the oxide layer.

scholarly journals Comparative Study on the Activity of GaF3 and Ga2O3 Nanoparticle-Doped CsF-AlF3 Flux for Brazing 6061 Al/Q235 Steel Joints

Crystals ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 498 ◽  
Author(s):  
Zhen Yao ◽  
Songbai Xue ◽  
Junxiong Zhang
Keyword(s):  
Aluminum Alloy ◽  
Comparative Analysis ◽  
Carbon Steel ◽  
Base Metal ◽  
Filler Metal ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
6061 Aluminum Alloy ◽  
Steel Joints ◽  
Molten Filler Metal

The effect of trace amounts of GaF3 and Ga2O3 nanoparticles on the wettability and spreadability of CsF-AlF3 flux matched Zn-15Al filler metal were comparatively studied on 6061 aluminum alloy and Q235 low-carbon steel. The experimental results indicate that appropriate amounts of GaF3 and Ga2O3 added into the flux could significantly promote the Zn-15Al filler metal to wet and spread on the surface of 6061 aluminum alloy and Q235 low-carbon steel. The optimum ranges for GaF3 and Ga2O3 were 0.0075–0.01wt.% and 0.009–0.01 wt.%, respectively. Comparative analysis showed that the activity of CsF-AlF3 flux bearing GaF3 was higher than that bearing Ga2O3. The reason for this is that the former flux has a stronger ability to remove oxides of the base metal and reduce the interfacial tension of the molten filler metal and the base metal.

scholarly journals Effect of Grain-size on Fatigue Strength of Low Carbon Steel at Elevated Temperatures

1978 ◽  
Vol 21 (152) ◽  
pp. 181-188 ◽  
Author(s):  
Norihiko HASEGAWA ◽  
Yozo KATO ◽  
Masaki NAKAJIMA
Keyword(s):  
Grain Size ◽  
Fatigue Strength ◽  
Carbon Steel ◽  
Elevated Temperatures ◽  
Low Carbon Steel ◽  
Low Carbon

Effect of Filler Alloy on Microstructure, Mechanical and Corrosion Behaviour of Dissimilar Weldment between Aisi 201 Stainless Steel and Low Carbon Steel Sheets Produced by a Gas Tungsten Arc Welding

2012 ◽  
Vol 581-582 ◽  
pp. 808-816 ◽  
Author(s):  
Chuaiphan Wichan ◽  
Srijaroenpramong Loeshpahn
Keyword(s):  
Stainless Steel ◽  
Carbon Steel ◽  
Weld Metal ◽  
Base Metal ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
Delta Ferrite ◽  
Steel Sheets ◽  
Gas Tungsten Arc ◽  
Weld Metals

The joining of austenitic stainless steel (AISI 201) to low carbon steel sheets (CS) was attempted by gas tungsten arc welding (GTAW) with four types of consumables. The studied consumables were ER308L, ER309L, ER316L stainless steel wires, and AWS A5.18 carbon steel wire. The welding parameters – i.e. the current of 90 A and the welding speed of 62 mm.min-1 – were fixed in all welding operations. The microstructure of weld metal produced by stainless steel consumables consisted of delta ferrite in austenite matrix. The delta ferrite in the form of continuous dendrite was observed in weld metals produced by 308L and 309L fillers. The dendrite of delta ferrite was relatively discontinuous in weld metal produced by 316L filler. The microstructure of weld metal produced by carbon steel filler consisted of equiaxed ferrite and pearlite, similar to that of carbon steel. The corrosion behavior of weld metal was investigated by potentiodynamic method. Specimens were tested in 0.35-wt% NaCl solution saturated by laboratory air at 27°C. It was found that the corrosion potential of weld metal produced by carbon steel filler was considerably lower than those of AISI 201 base metal and weld metals welded using stainless steel consumables. Weld metals produced by stainless steel fillers –308L,309L and316L– exhibited the similar corrosion potentials as that of 201 base metal. The pitting potentials of weld metals produced by 309L, 316L fillers were higher than those of 201 base metal and weld metal produced by 308L filler respectively. It was discussed that the increase of Cr content in weld metals by using 309L filler contained with 24.791 wt% of Cr, or the addition of Cr and Mo in weld metals by using 316L filler contained with 21.347 wt% of Cr and 2 wt% of Mo, promoted the pitting corrosion resistance of weld metal to be comparable with that of Fe-17Cr-3Ni (201) base metal. An emission spectroscopy was applied to quantify the amount of elements in weld metals. By considering the contents of Cr and Mo, the pitting resistance equivalent number (PREN) of each weld metal was calculated. The discussion of the corrosion resistance of weld metals related to PREN and microstructure was made in the paper.

scholarly journals Numerical Predictions of Dry Oxidation of Iron and Low-Carbon Steel at Moderately Elevated Temperatures

1996 ◽  
Vol 465 ◽  
Author(s):  
G. A. Henshall
Keyword(s):  
Carbon Steel ◽  
Elevated Temperatures ◽  
Low Carbon Steel ◽  
Numerical Approach ◽  
Euler Method ◽  
Temperature History ◽  
Low Carbon ◽  
Model Calculations ◽  
Numerical Predictions ◽  
Dry Oxidation

ABSTRACTWrought and cast low-carbon steel are candidate materials for the thick (e.g. 10 cm) outer barrier of nuclear waste packages being considered for use in the potential geological repository at Yucca Mountain. Dry oxidation is one potential degradation mode for these materials at the moderately elevated temperatures expected at the container surface, e.g. 323–533 K (50–260 °C). Therefore, numerical predictions of dry oxidation damage have been made based on experimental data for iron and low-carbon steel and the theory of parabolic oxidation. A numerical approach employing the Forward Euler method has been implemented to integrate the parabolic rate law for arbitrary, complex temperature histories. Assuming growth of a defect-free, adherent oxide, the surface penetration of a low-carbon steel barrier following 5000 years of exposure to a severe, but repository-relevant, temperature history is predicted to be only about 0.127 mm, less than 0.13% of the expected container thickness of 10 cm. Allowing the oxide to spall upon reaching a critical thickness increases the predicted metal penetration values, but degradation is still computed to be negligible. Based on these physically-based model calculations, dry oxidation is not expected to significantly degrade the performance of thick, corrosion allowance barriers constructed of low-carbon steel.

Sign in / Sign up

Export Citation Format

Share Document