Effect of the welding process and heat input on the fracture toughness of welded joints in high strength low alloy steel

1987 ◽  
Vol 91 ◽  
pp. 29-38 ◽  
Author(s):  
P. Sundaram ◽  
R.K. Pandey ◽  
A.N. Kumar
Keyword(s):  
Fracture Toughness ◽  
Alloy Steel ◽  
Welded Joints ◽  
Heat Input ◽  
Welding Process ◽  
High Strength ◽  
Low Alloy Steel

scholarly journals The impact of heat input on the mechanical properties and microstructure of High Strength Low Alloy steel welded joint by GMA welding process

2021 ◽  
Vol 9 (3) ◽  
pp. 299-310 ◽  
Author(s):  
Saadat Ali Rizvi ◽  
Rajnish Singh ◽  
Saurabh Kumar Gupta
Keyword(s):  
Mechanical Properties ◽  
Alloy Steel ◽  
Heat Input ◽  
Gma Welding ◽  
Hsla Steel ◽  
Welding Process ◽  
Welding Current ◽  
High Strength ◽  
Low Alloy Steel ◽  
The Impact

The basic aim of this study was to find a relationship between heat input and mechanical properties of high strength low alloy steel (HSLA) welded joints and also elaborate its effect on microstructure. The combined effect of welding current, voltage and speed i.e. Heat Input on mechanical properties of High Strength Low Alloy Steel (ASTM A242 type-II) weldments have been studied in the present work. HSLA steel work pieces were welded by Gas metal arc welding (GMAW) process under varying welding current, arc voltage, and welding speed. Total nine samples were prepared at different heat input level i.e. 1.872 kJ/mm, 1.9333 kJ/mm, 2.0114 kJ/mm, 2.1 kJ/mm, 2.1956 kJ/mm, 2.296 kJ/mm, 2.4 kJ/mm, 2.5067 kJ/mm and 2.6154 kJ/mm It was observed that as heat input increases the ultimate tensile strength and microhardness of weldment decreased while impact strength increased and it was also observed that on increasing the heat input grain size of microstructure tends to coarsening it is only due to decreasing in cooling rate.

scholarly journals Impact Toughness of High-Strength Low-Alloy Steel Welded Joints

2018 ◽  
Vol 3 (3) ◽  
pp. 98-104 ◽  
Author(s):  
Andreja Ilić ◽  
Lozica Ivanović ◽  
Blaža Stojanović ◽  
Danica Josifović ◽  
Eleonora Desnica
Keyword(s):  
Impact Toughness ◽  
Alloy Steel ◽  
Welded Joints ◽  
High Strength ◽  
Low Alloy Steel

scholarly journals Hardfacing Welded ASTM A572-Based, High-Strength, Low-Alloy Steel: Welding, Characterization, and Surface Properties Related to the Wear Resistance

Metals ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 244 ◽  
Author(s):  
Nakarin Srisuwan ◽  
Nuengruetai Kumsri ◽  
Trinet Yingsamphancharoen ◽  
Attaphon Kaewvilai
Keyword(s):  
Wear Resistance ◽  
Surface Properties ◽  
Alloy Steel ◽  
Electrode Materials ◽  
Welding Process ◽  
High Strength ◽  
Low Alloy Steel ◽  
Nickel Chromium ◽  
Crystallite Sizes ◽  
American Society

This work presents the improvement of hardfacing welding for American Society for Testing and Materials (ASTM) A572-based high-strength, low-alloy steel by controlling the heating/cooling conditions of welding process. In the welding process, the buffer and hardfacing layers were welded onto A572-based material by a nickel–chromium electrode and chromium carbide electrode, respectively. The base metal and electrode materials were controlled by the heating/cooling process during the welding to reduce excessive stress, which could result in a crack in the specimens. The welded specimens were examined by visual and penetrant inspections for evaluating the welding quality. The macro–micro structure of the deposited layer was investigated; scanning electron microscope with an energy-dispersive X-ray spectrometer (SEM-EDS) and XRD were used to characterize structural properties, elemental compositions, and crystallite sizes of the welded specimens. The surface properties, such as hardness, impact, and abrasive wear of the welded specimens, were tested for evaluation of the wear resistance of the welded specimens.

KAISALOY

Alloy Digest ◽  
1957 ◽  
Vol 6 (1) ◽  
Keyword(s):  
Fracture Toughness ◽  
Corrosion Resistance ◽  
Tensile Properties ◽  
Alloy Steel ◽  
Weight Reduction ◽  
High Strength ◽  
Low Alloy Steel ◽  
Steel Corporation

Abstract KAISALOY is a high-strength low-alloy steel combining excellent formability and good weldability with desirable corrosion resistance. It is intended primarily for weight reduction. Kaisaloy is furnished in three grades. This datasheet provides information on composition, hardness, and tensile properties as well as fracture toughness. It also includes information on corrosion resistance as well as forming, machining, and joining. Filing Code: SA-53. Producer or source: Kaiser Steel Corporation.

Dissimilar Welding between 2205 Duplex Stainless Steel and API X52 High Strength Low Alloy Steel

2018 ◽  
Vol 18 ◽  
pp. 7-13
Author(s):  
Brahim Belkessa ◽  
Djamel Miroud ◽  
Billel Cheniti ◽  
Naima Ouali ◽  
Maamar Hakem ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Duplex Stainless Steel ◽  
Alloy Steel ◽  
Welding Process ◽  
High Strength ◽  
Dissimilar Welding ◽  
Low Alloy Steel ◽  
Shielded Metal Arc Welding ◽  
2205 Duplex Stainless Steel ◽  
Metal Arc Welding

This work purposes to investigate the microstructure and the mechanical behavior of dissimilar metals weld between 2205 duplex stainless steel (UNS 31803) and high strength low alloy steel API X52. The joining was produced by shielded metal arc welding process using two different filler metals, the duplex E2209 and austenitic E309 grade.The microstructures of the dissimilar welded joints have been investigated by optical microscopy, scanning electron microscopy and energy-dispersive spectroscopy (EDS). The EDS analysis performed at the API X52/weld metal interface showed an evident gradient of Cr and Ni between fusion and type II boundaries, where the highest hardness value was recorded.

Thermal Simulation Study of 900MPa Grade High-Strength Low Alloy Steel in Welding Procedures

2011 ◽  
Vol 704-705 ◽  
pp. 1128-1132
Author(s):  
Di Xin Yang ◽  
Yuan Fang Sun
Keyword(s):  
Alloy Steel ◽  
Heat Input ◽  
High Strength ◽  
Weld Bead ◽  
Peak Temperature ◽  
Welding Parameters ◽  
Chemical Compositions ◽  
Low Alloy Steel ◽  
Hydraulic Support ◽  
Welding Heat Input

Hydraulic support is an important part of fully mechanized equipments. The constructional steels of hydraulic support with international advanced level mainly adopt the high-strength welding structural steel with its tensile strength of more than 700~1000MPa.This paper analyzes the chemical compositions features of S890 high-strength low alloy steel for 900MPa grade.The Influence of welding parameters,peak temperature and on the microstructures and mechanical properties of welding HAZ of S890 high-strength low alloy steel were investigated by thermo-simulated tests, The influence of welding heat input on the mechanical behaviors of the welded joint was also investigated. The results show that the microstructures of S890 steel change from tempered martensite to bainite and a little ferrite , pearlitic when welding heat input changes from low to high, and accompany the austenite grains coarsening ,so the impact toughness and hardness of welding HAZ at lower peak temperatures and shorter are higher than that at higher peak temperature and long . Welding HAZ produced by the second weld bead will overlap partially with the HAZ produced by the first weld bead. In this area, primitive microstructure tempers again or partial re-phase transformations and re-cools,but the area involved in the overlap is limited,so the influence on the properties of S890 steel is not obvious. In covered arc welding,the influence on the welded join strength of S890 steel is not distinct when heat input change in a certain scope, but the plasticity of the welded join falls off steeply as heat input increases. Keywords: S890 steel; high-strength low alloy steel; weld performance; hydraulic supports

scholarly journals Hydrogen Embrittlement Susceptibility of Gas Metal Arc Welded Joints from a High‐Strength Low‐Alloy Steel Grade S690QL

2020 ◽  
Vol 91 (11) ◽  
pp. 2000131
Author(s):  
Martin Christ ◽  
Xiaofei Guo ◽  
Rahul Sharma ◽  
Tianyi Li ◽  
Wolfgang Bleck ◽  
...  
Keyword(s):  
Hydrogen Embrittlement ◽  
Alloy Steel ◽  
Welded Joints ◽  
High Strength ◽  
Steel Grade ◽  
Low Alloy Steel
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