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Showing 1 to 9 of 9 for “"Weld metals"”.
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Relationship between Microstructure, Properties and HICC Resistance of HSLA steel weld metals
… of high strength low alloy (HSLA) steel weld metals were studied in this investigation. The weld metals were designed in a previous work. Their microstructures were characterised by optical and electron microscopy (FEG-SEM and TEM). Microphases, such as non metallic inclusions (NMI) and …
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Effect of Microstructure on Mechanical Properties of High Strength Steel Weld Metals
… and mechanical properties of high strength steel weld metals have been studied. Based on neural network modelling, weld metals were produced using shielded metal arc welding with nickel at 7 or 9 wt. %, manganese at 2 or 0.5 wt. % while carbon was varied between 0.03 and 0.11 wt. %. From …
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Effects of microstructure and strain ageing on toughness of nuclear PWR reactor weld metals
… of a multi-pass low-alloy ferritic steel weld metal have been investigated. The weld metal simulated submerged arc welds used in the fabrication of Sizewell B power station reactor pressure vessel. The study aimed to investigate differences in mechanical properties of a single …
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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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Effects of thermal aging on Stress Corrosion Cracking and mechanical properties of stainless steel weld metals
… Cracking (SCC) in and around primary loop piping welds in Boiling Water Reactors has been observed worldwide as plants continue to operate at temperatures and pressures near 2880C (5500F) and 6.9 MPa (1000 PSI). An experimental program was designed to explore the effect of thermal aging on the SCC …
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The influence of welding parameters and parent plate metallurgical characteristics on solidification of austenitic stainless steel weld metals
… the formation and morphology of delta ferrite in welds on AISI 318L and 321 steels. The experiments were carried out on commercially produced plates in the following conditions: (i) as received condition (ii) further deformed by cold rolling. (iii) further deformed by hot rolling. The effect of …
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The effect of thermal aging and boiling water reactor environment on Type 316L stainless steel welds
… materials, and this process is operative also in welds of either cast or wrought stainless steels where 6-ferrite is present. While the embrittlement can occur after several hundred hours of aging at 475°C, the process is also operative at lower temperatures, at the 288°C operating temperature of …