Study on mechanical properties of austenitic stainless steel depending on heat input at laser welding

Jung, Sung-Min; Park, In-Duck; Lee, Kwang-Hyeon; Suh, Jeong; Kim, Gong-Young; Ki-WooNam,

doi:10.1007/s12206-019-1211-3

Cited by 4 publications

(1 citation statement)

References 16 publications

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“…Hence, St affects the microstructure and properties of the joint, and the solidification time can be calculated by Eq.5 [20]: Where, St is solidification time in sec, L is the heat of fusion in J/mm 3 (is 2 J/mm 3 for steel), Hnet is heat input, ρc is volumetric specific heat in J/mm 3 .℃, and Tm is the melting temperature in ℃. The influence of welding speed on mechanical properties in 304L stainless steel welds was investigated [21], and it was found that the mechanical properties and cooling rate increase with increasing welding speed. Best result for mechanical properties is obtained using an intermediate welding speed of 1.5 m/min.…”

Section: Introductionmentioning

confidence: 99%

Effect of Heat Input and Shielding Gas on the Performance of 316 Stainless Steel Gas Tungsten Arc Welding

Fouad

El-Nikhaily

Ahmed

et al. 2020

Journal of Petroleum and Mining Engineering

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The effect of nitrogen addition and heat input on weld metal microstructure and mechanical properties of 316 stainless steel is studied. Autogenous gas tungsten arc welding (GTAW) is employed by adding up to 2 vol.% N2 in Ar. Welding speed and heat input rate are measured as functions of gas composition. Weld defects are examined by radiographic testing, and weld metal microstructure is studied by optical microscopy. Mechanical properties of welds are determined by uniaxial tensile testing, hardness measurements, and bending test. Weld dendritic structure is refined by increasing N2 content in Ar. The mechanical properties and cooling rate are lower with increasing heat input. Besides, adding nitrogen to argon shielding gas leads to higher values of the ultimate tensile strength and hardness. The tensile strength, yield stress and elongation percent of welds depends strongly on the heat input and nitrogen content in shielding gas. This is discussed on the basis of microstructural characterization. Moreover, the weld nugget area, cooling time and solidification time increase with increasing heat input and nitrogen content. Finally, after applying the bending test up to 180o no cracks, tearing or surface defects could be observed on welded samples.

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Section: Introductionmentioning

confidence: 99%

Effect of Heat Input and Shielding Gas on the Performance of 316 Stainless Steel Gas Tungsten Arc Welding

Fouad

El-Nikhaily

Ahmed

et al. 2020

Journal of Petroleum and Mining Engineering

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Stress Corrosion Cracking Behavior of Welded Joints in 304 Stainless Steel Flange Neck on a Tandem Mixer

Li,

et al. 2024

J Fail. Anal. and Preven.

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Effect of heat input and post weld heat treatment on the texture, microstructure and mechanical properties of laser beam welded AISI 317L austenitic stainless steel

Köse¹

2022

Materials Science and Engineering: A

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Study on mechanical properties of austenitic stainless steel depending on heat input at laser welding

Cited by 4 publications

References 16 publications

Effect of Heat Input and Shielding Gas on the Performance of 316 Stainless Steel Gas Tungsten Arc Welding

Effect of Heat Input and Shielding Gas on the Performance of 316 Stainless Steel Gas Tungsten Arc Welding

Stress Corrosion Cracking Behavior of Welded Joints in 304 Stainless Steel Flange Neck on a Tandem Mixer

Effect of heat input and post weld heat treatment on the texture, microstructure and mechanical properties of laser beam welded AISI 317L austenitic stainless steel

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