Effect of thermal processing variations on the mechanical properties and microstructure of a precipitation hardening HSLA steel

Hicho, G E; Singhal, S. P.; Smith, L. C.; Fields, Richard J.

doi:10.1007/bf02833262

Cited by 15 publications

(5 citation statements)

References 1 publication

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“…Precipitates are important in alloys since relatively small changes in precipitate distribution can cause large changes in yield strength or fracture toughness [ 104 ]. SANS has been used at NIST to study the precipitate concentration and size distribution in HSLA steel as a function of different heat treatments [ 105 ]. HSLA steel is a Cu-Fe system whose strength is developed by the precipitation of a copper-rich phase.…”

Section: Small Angle Neutron Scattering From Metallic Materialsmentioning

confidence: 99%

Small angle neutron scattering at the National Institute of Standards and Technology

Hammouda

Krueger

1993

J. RES. NATL. INST. STAN.

117

115

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The small angle neutron scattering technique is a valuable method for the characterization of morphology of various materials. It can probe inhomogeneities in the sample (whether occurring naturally or introduced through isotopic substitution) at a length scale from the atomic size (nanometers) to the macroscopic (micrometers) size. This work provides an overview of the small angle neutron scattering facilities at the National Institute of Standards and Technology and a review of the technique as it has been applied to polymer systems, biological macromolecules, ceramic, and metallic materials. Specific examples have been included.

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Section: Small Angle Neutron Scattering From Metallic Materialsmentioning

confidence: 99%

Small angle neutron scattering at the National Institute of Standards and Technology

Hammouda

Krueger

1993

J. RES. NATL. INST. STAN.

117

115

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“…A considerable number of investigations on the properties of HSLA steels and their welding have been carried out in the past 30 years [6,7]. The main concern in these studies is the fracture behaviour and the mechanical and metallurgical properties and characteristics of welded joints [8,9]. Structural safety and a tolerance to discontinuities in welded joints are obtained by imposing requirements on toughness.…”

Section: Introductionmentioning

confidence: 99%

Effects of Welding Positions on Mechanical Properties and Microstructure in Weld Metal of High Strength Steel

Masoumi¹,

Shahriari

2009

AMR

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In this study the effects of two welding positions included in flat and upward vertical on the mechanical properties and microstructure of high strength weld metal deposited with shielded metal arc welding (SMAW) using an electrode of ASME SFA 5.5-96 E9018B3 type have been investigated. The aim of the present work is to study the effects of these two welding positions for a weld metal alloyed with 1%Mo, 2%Cr, 0.79%Mn, and 0.08% C in the stress relieved condition. For studying mechanical properties Tensile, Impact and hardness experiments have been conducted; meanwhile chemical analysis and microstructure studying have been carried out on specimens. The results show that welding position does not have any significant effect on tensile and hardness of the weld metal but in vertical position welding metal toughness is lower than toughness in flat position in all temperatures. Transition temperature of ductile fracture to brittle fracture is -50 °C for E9018B3 in welding of high strength micro alloyed steels.

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“…4) ASTM A710 grade steel (0.07 % C, 0.5 % Mn, 0.4 % Si, 0.75 % Cr, 0.9 % Ni, 0.2 % Mo, 1.15 % Cu and 0.0 2% Nb) was first to be developed in these low-carbon copper-bearing steels in late seventies for use in offshore structures. [5][6][7][8][9][10] Based on its chemistry, HSLA-80 steel was developed by United States Navy in early eighties as a substitute for HY-80 grade of steel. 1,[11][12][13][14] High strength (Minimum yield strength of 552 MPa), good low temperature impact toughness (81 J at Ϫ85°C) and good weldability of HSLA-80 steel made it a candidate for construction of naval ships and submarines.…”

Section: Introductionmentioning

confidence: 99%

Weldability and Microstructural Aspects of Shielded Metal Arc Welded HSLA-100 Steel Plates.

Dhua¹,

Mukerjee²,

Sarma

2002

ISIJ International

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HSLA-100 steel with 14 mm thickness in quenched and tempered condition was shielded metal arc welded (SMAW) with 2 kJ/mm heat input using basic flux coated filler rods without any pre or post welding heat treatments. The steel was found to be welded satisfactorily in this condition without developing any defect. Optical microscopy studies revealed typical cast dendritic structure in the weld metal and coarse bainite in grain-coarsened area of the heat-affected zone (HAZ). Transmission electron microscopy (TEM) study confirmed incidence of mixed structure of martensite laths and bainite in weld metal, while, it was mainly of bainite laths in HAZ with evidence of martensite-austenite (M-A) constituent and massive ferrite. The yield strength (YS), ultimate tensile strength (UTS) and Charpy V-notch (CVN) impact energy of the weld metal (YS-695 MPa, UTS-842 MPa and CVN-105 J at Ϫ50°C) and HAZ (YS-790 MPa, UTS-891 MPa and CVN-130 J at Ϫ50°C) were found satisfactory although HAZ properties were inferior to the base metal properties. The hardening of HAZ was not very significant in this steel under the present welding condition.

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Effect of thermal processing variations on the mechanical properties and microstructure of a precipitation hardening HSLA steel

Cited by 15 publications

References 1 publication

Small angle neutron scattering at the National Institute of Standards and Technology

Small angle neutron scattering at the National Institute of Standards and Technology

Effects of Welding Positions on Mechanical Properties and Microstructure in Weld Metal of High Strength Steel

Weldability and Microstructural Aspects of Shielded Metal Arc Welded HSLA-100 Steel Plates.

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