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Showing 1 to 20 of 28 for “"low alloy steel"”.
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Rheocasting in low alloy steel
Thesis. 1978. M.S.--Massachusetts Institute of Technology. Dept. of Materials Science and Engineering.
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Development of low alloy steel by direct metal laser sintering
… and optimizing process parameters for low alloy (4340/4140 steel) for the powder bed fusion process. Low alloy steel is used in parts where high strength and toughness are required. During parameter optimization, several aspects of the process are investigated. Powder size and …
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The Boundary Lubricated Friction and Wear of Low Alloy Steel
… lubricated friction and wear of AISI 52100 steel sliding partners. Boundary conditions were obtained by using speed and load combinations which resulted in friction coefficients in excess of 0.1. Lubrication was achieved using zero, 15 and 1000 ppm concentrations of an organic dimeric acid …
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Oxidational wear of low alloy steel in gases other than air
… has been used to study the oxidational wear of low alloy steel in a series of experiments which were carried out under dry wear sliding conditions at range of loads from 11.28 to 49.05 N and three sliding speeds of 2 m/s, 3.5 m/s and 5 m/s, in atmosphere of air, Ar, CO2, 100% O2, 20% O2-80% Ar …
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A study of residual stresses in low alloy steel theta ring castings.
… during the casting and heat treatment of a low alloy steel, BW2 have been studied using ta theta ring so that temperature differentials could be varied using different tie bar sizes. Residual stresses have been measured using centre hole drilling and tie bar sectioning techniques. Centre …
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The fracture characteristics of a boron containing high strength low alloy steel
… (100,000psi) strength level Naval quality steel. RQT 701 is a low nickel, boron containing quenched and tempered steel which is lessexpensive than HY 100 due to a lower nickel content. Thehardenability is maintained by the boron addition. The preliminary testing of RQT 701 showed a …
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Effect of Porosity on the Creep Rupture Behavior of Low Alloy Steel Weldments.
… on the high temperature creep characteristics of low-alloy steel weldments. The material selected for investigation was ASTM A387-D, a 2-1/4% Chromium - 1% 15 Molybdenum low-alloy steel. This material is used in the fabrication of nuclear and petro-chemical reactor vessels, steam generators, …
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Effect of Porosity on the Elevated Temperature Fatigue Properties of Low-Alloy Steel Weldments.
… the elevated temperature fatigue properties of low-alloy steel weldments. The material selected for investigation was ASTM A387-D, a 2-1/4 Cr - 1 Mo low-alloy steel commonly used in the fabrication of welded. structures which must perform at elevated temperature, such as nuclear vessels and …
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Stress corrosion cracking and hydrogen embrittlement of thick section high strength low alloy steel
… performance of weldments of a high strength low alloy(HSLA) steel in a simulated seawater environment. This steel, designated HSLA80, was developed by the United States Navy for use in ship structural applications. Stress corrosion CRACKING(SCC) and hydrogen embrittlement(HEM) were …
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Sulfide stress cracking resistance of API-X100 high strength low alloy steel in H2S environments
… of the newly developed API-X100 High Strength Low Alloy (HSLA) steel was investigated in the NACE TM0177 "A" solution. The NACE TM0177 "A" solution is a hydrogen sulfide (H2S) saturated solution containing 5.0 wt.% sodium chloride (NaC1) and 0.5 wt.% acetic acid (CH3COOH). The aim of this …
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Effects of yttrium on the microstructural and inclusion development in low alloy steel weld metal, The
Includes bibliographical references (pages 209-220).
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The influence of visco-elastic processes on the generation of thermal stresses in quenched low alloy steel plates.
… effect in quenched specimens of 835M30 steel was described quantitatively by the use of the standard linear solid, which allowed the calculation of the thermal stress and strain during quenching in water, oil and in a martempering situation. The introduction of viscous flow into the …
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Evaluation of Temper Embrittlement in 2.25 Cr- 1 Mo Weld Metals Utilizing X-Ray Diffraction.
Temper embrittlement in low alloy steel is a phenomenon of reversible embrittlement occurring when a susceptible alloy is held in or slowly cooled through a temperature range of 1100 - 650 °F (13). Characteristics of this type of embrittlement are a reduction in notch toughness, an increase in the …
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Ensaios e metodologias de análise de integridade para equipamentos em aço baixa liga sujeitos à fragilização por hidrogênio
… mechanics, especially hydrogen embrittlement of low alloy steels. Applicability of structural integrity and fitness for service techniques based on fracture mechanics for this scenario is discussed together with different testing methodologies in order to obtain useful parameters. Rising step …
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The effect of operating parameters on the wear behaviour of disc poppet valves in reciprocating slurry pumps
… and valve angle, on the wear resistance of a low alloy steel, as a function of its mechanical properties. It has been shown that the wear of the valves is a sensitive function of the operating parameters. Significant improvements in the life of the valves can be achieved through increasing …
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Quenching and partitioning plate steel for wear and toughness applications
… and partitioning (Q&P) processing to produce low-alloy steel plates with increased wear resistance and toughness for use in the mining and earth moving industries. This work investigates the application of Q&P heat treatments to 18 mm thick low-alloy steel plates to obtain microstructures …
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A Dislocation-Based Constitutive Model for Hydrogen-Deformation Interactions and a Study of Hydrogen-Induced Intergranular Fracture
… The behavior of several austenitic stainless steels is considered, both in comparison with uniaxial tension experiments and in comparison with a rate independent model of plastic deformation ahead of a crack tip. The second model is a framework for describing the effect of hydrogen on a …
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A dislocation-based constitutive model for hydrogen—deformation interactions and a study of hydrogen-induced intergranular fracture
… The behavior of several austenitic stainless steels is considered, both in comparison with uniaxial tension experiments and in comparison with a rate independent model of plastic deformation ahead of a crack tip. The second model is a framework for describing the effect of hydrogen on a …
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Tribo-corrosion maps for steels, titanium and titanium carbide materials
… Inert Gas (TIG) welding torch melting process on steel and titanium substrates. The integrity of TiC composite coatings were checked and analysed on the substrates. The effects of change in sliding speeds and normal loads on wear behaviours were investigated for dry sliding conditions and …
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Effect of Processing Path on Microstructure and Mechanical Properties of a Low Carbon, Low Alloy Advanced High Strength Steel
… several variants of advanced high strength steels (AHSS) have been developed with the latest focus on 3rd generation AHSS. In this work, microstructural evolution and mechanical properties of an automotive grade low carbon, low alloy steel under air-cooled, water-quenched, and tempered …
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