The effect of microstructure on hardness and toughness of low carbon welded steel using inert gas welding

Gharibshahiyan, Ehsan; Honarbakhsh-Raouf, A.; Parvin, Nader; Rahimian, Mehdi

doi:10.1016/j.matdes.2010.11.056

Cited by 69 publications

(36 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Specimens for the mechanical testing were prepared as per ASTM standards [25]. The standard Izord test specimens were prepared for the test [26]. Brinell hardness number (BHN) was obtained using a perfectly spherical hardened steel ball of 10 mm pressed against the test surface using a static force of 3000 kg for at least 10 seconds for the steel and measuring the diameters of the indentation left on the surface by means of a microscope.…”

Section: Experimental Details Materials and Testingmentioning

confidence: 99%

“…Lakshminarayanan et al have done an assessment of microstructure, hardness, tensile and impact strength of friction stir welded ferritic stainless steel joints [25]. Gharibshahiyan et al studied the effect of microstructure on hardness and toughness of low carbon welded steel using inert gas welding [26]. Arun Kumar et al carried out multiresponse optimisation process parameters for TIG welding of Incoloy 800HT by Taguchi grey relational analysis [27].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Investigation on TIG welding parameters of 2205 duplex stainless steel

Ravichandran¹,

Sait²,

Vignesh³

2022

Int. J. Automot. Mech. Eng.

View full text Add to dashboard Cite

TIG welding process parameters were analysed for joining duplex stainless-steel plates. Signal to noise (SN) ratio and Analysis of Variance (ANOVA) analyses were applied for investigating the selected welding parameters. The selected parameters were current (A), gas flow rate (L/min) and speed (mm/min). The purpose of this work is to produce weld joints with maximum impact of strength and hardness. L9 orthogonal array was selected according to the aforementioned factors with three levels. The impact strength of the joints was found using the Izord impact testing machine and hardness of all joints was measured using the Brinell Hardness machine. From the SN ratio analysis, it was observed that for the high impact strength, the required welding current was 150 A, gas flow rate was 14 L/min and the welding speed was 210 mm/min while for high hardness, the welding current was 190 A, gas flow rate was 12 L/min and the welding speed was 175 mm/min. ANOVA analysis indicated that the gas flow rate was the most significant one for both impact strength and hardness of the joints.

show abstract

Section: Experimental Details Materials and Testingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Investigation on TIG welding parameters of 2205 duplex stainless steel

Ravichandran¹,

Sait²,

Vignesh³

2022

Int. J. Automot. Mech. Eng.

View full text Add to dashboard Cite

show abstract

“…With the further increase in peak temperature, the microhardness increases to maximum value at 1250ºC. Moreover, Gharibshahiyan et al (2011) investigated the effect of heat input on the HAZ and grain growth of low carbon steels and showed that, at high heat input and low cooling rate, nucleation and recrystallization occur fast in the HAZ that was found to accelerate grain growth and, hence, results in a reduction of the hardness. It was also observed that increasing the heat input reduces the amount of pearlite that was formed in the HAZ upon cooling.…”

Section: Heat Input Of Welding Polaritymentioning

confidence: 99%

“…It was also observed that increasing the heat input reduces the amount of pearlite that was formed in the HAZ upon cooling. Gharibshahiyan et al (2011) added that cooling from high temperatures contributes to less grain nucleation and, thus, more tendencies to the formation of ferrites than that of pearlites. In such a case, the ferrite phase nucleates and grows, most likely from the grain boundaries in the form of Widmanstätten.…”

Section: Heat Input Of Welding Polaritymentioning

confidence: 99%

Effect of welding polarity on bead geometry, microstructure, microhardness, and residual stresses of 1020 steel

et al. 2014

View full text Add to dashboard Cite

“…Some researchers [10,11] have investigated the relationship between hardness and tensile strength and used it to assess the strength of the welded joint. High values of hardness in the welded zone may be attributed to a fine grain size [12,13]. Lower values of hardness in the HAZ may be related to grain growth and a ferrite phase in this region [14,15].…”

Section: Introductionmentioning

confidence: 99%

Improvement in the Design of Welded Joints of EN 235JR Low Carbon Steel by Multiple Response Surface Methodology

Lostado-Lorza

Escribano-García

Calvo

et al. 2016

Metals

View full text Add to dashboard Cite

Gas metal arc welding (GMAW) is a joining process that is controlled by several inputs or welding parameters. However, speed, current and voltage are the parameters that are most frequently used in setting this process. Cord area, yield stress, tensile strength, residual stresses, hardness and roughness are considered to be outputs or welded joints parameters. They are widely used when the design requirements are based on the cost, manufacturing speed, strength and surface finish. This paper seeks to determine the relationship between the welding parameters and the welded joint parameters of speed, current and voltage in butt joints (X-groove) of EN 235JR by the response surface method (RSM). The optimal joints when considering the design requirements of cost, manufacturing speed, strength and surface finish were achieved by using the multi-response surface (MRS). The optimal welding parameters reached when considering the design requirements of cost were 140.593 amps, 8.192 mm/s and 29.999 volts, respectively, whereas the design requirements of manufacturing speed were 149.88 amps, 9.261 mm/s and 29.999 volts. Finally, the welding parameters for the design requirements of joint strength and surface finish were 149.086 amps, 7.139 mm/s and 28.541 volts and 150.372 amps, 8.561 mm/s and 29.877 volts, respectively.

show abstract

The effect of microstructure on hardness and toughness of low carbon welded steel using inert gas welding

Cited by 69 publications

References 10 publications

Investigation on TIG welding parameters of 2205 duplex stainless steel

Investigation on TIG welding parameters of 2205 duplex stainless steel

Effect of welding polarity on bead geometry, microstructure, microhardness, and residual stresses of 1020 steel

Improvement in the Design of Welded Joints of EN 235JR Low Carbon Steel by Multiple Response Surface Methodology

Contact Info

Product

Resources

About