An assessment of mechanical properties of P92 steel weld joint and simulated heat affected zones by ball indentation technique

Barbadikar, Dipika R.; Sakthivel, T.; Ballal, Atul; Peshwe, D. R.; Rao, P. Syamala; Mathew, M.D.

doi:10.1080/09603409.2017.1371913

Cited by 6 publications

(4 citation statements)

References 18 publications

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“…At temperatures above 900°C, complete dissolution of M23C6 carbides occurs. Therefore, solid solution strengthening occurs as a result of more C and N in the solution [6,12,20]. The dissolved carbides lead to untempered martensite resulting in higher hardness values of the simulated samples than the base metal.…”

Section: Microstructure Of P92 Steel Subjectedmentioning

confidence: 99%

“…Studies have shown that for P92 steel, the ICHAZ (experiences a temperature of 900°C) is associated with Type IV cracking [12,13]. The ICHAZ region exhibits the lowest tensile properties and hardness due to coarsening of M23C6 carbides and the reduction in the dislocation density [12]. However, other researchers reported that creep failure of the weld joint occurs at the FGHAZ (this region experiences temperature of around Ac3, which is 950 for P92 steel) [1,14].…”

Section: Introductionmentioning

confidence: 99%

“…However, the location of Type IV cracking still is not fully understood. Studies have shown that for P92 steel, the ICHAZ (experiences a temperature of 900°C) is associated with Type IV cracking [12,13]. The ICHAZ region exhibits the lowest tensile properties and hardness due to coarsening of M23C6 carbides and the reduction in the dislocation density [12].…”

Section: Introductionmentioning

confidence: 99%

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A Physical Simulation of Heat Affected Zone of Creep Resistant Steel: Microstructure and Mechanical Properties Analysis

Obiko

Lesley

Whitefield

et al. 2022

KEM

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The structural integrity of ASTM P92 steel welded joints is of concern due to the Type IV cracking associated with the heat-affected zone (HAZ). Two HAZ treatments were done on P92 steel using a Gleeble® 3500 thermo-mechanical simulator at 900°C (intercritical HAZ) and 950°C (fine-grained HAZ). Followed by post-weld heat treatment (PWHT) of the samples in two sets:: a conventional PWHT at 760°C for 2 hours followed by air cooling; or re-austenitisation at 1050°C for 40 minutes then air cooling, followed PWHT. After conventional PWHT, the HAZ simulated at 950°C had the lowest toughness (108J) than the base metal (130J). After the heat treatments, samples that underwent a 900°C HAZ simulation had higher Charpy toughness (improved from 130-208 ± 6J) and lower hardness (decreased from 234.4-222.3HV0.5) than those at 950°C. The microstructures had lath martensite with differing precipitate densities depending on the thermal treatment. Keywords: P92 steel, heat affected zone, post-weld heat treatment, precipitates

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Section: Microstructure Of P92 Steel Subjectedmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Physical Simulation of Heat Affected Zone of Creep Resistant Steel: Microstructure and Mechanical Properties Analysis

Obiko

Lesley

Whitefield

et al. 2022

KEM

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“…Comparisons with data from uniaxial testing clearly become more complex with welds. Several recent studies [ 16–19 ] have involved the application of the ABI procedure to welds. Other spherical indentation work on welds has involved indenter radii from 50 μm [ 20 ] up to over 1 mm.…”

Section: Introductionmentioning

confidence: 99%

Indentation Plastometry of Welds

Gu¹,

Campbell²,

Tang

et al. 2022

Adv Eng Mater

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This investigation concerns the application of the profilometry‐based indentation plastometry (PIP) methodology to obtain stress–strain relationships for material in the vicinity of fusion welds. These are produced by The Welding Institute (TWI), using submerged arc welding to join pairs of thick steel plates. The width of the welds varies from about 5 mm at the bottom to about 40–50 mm at the top. For one weld, the properties of parent and weld metal are similar, while for the other, the weld metal is significantly harder than the parent. Both weldments are shown to be approximately isotropic in terms of mechanical response, while there is a small degree of anisotropy in the parent metal (with the through‐thickness direction being slightly softer than the in‐plane directions). The PIP procedure has a high sensitivity for detecting such anisotropy. It is also shown that there is excellent agreement between stress–strain curves obtained using PIP and via conventional uniaxial testing (tensile and compressive). Finally, the PIP methodology is used to explore properties in the transition regime between weld and parent, with a lateral resolution of the order of 1–2 mm. This reveals variations on a scale that would be very difficult to examine using conventional testing.

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Study on the Effect of the Grain Refinement on Mechanical Properties of the P92 Welded Joint

Pandey

Kumar

Sirohi

et al. 2022

J. of Materi Eng and Perform

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An assessment of mechanical properties of P92 steel weld joint and simulated heat affected zones by ball indentation technique

Cited by 6 publications

References 18 publications

A Physical Simulation of Heat Affected Zone of Creep Resistant Steel: Microstructure and Mechanical Properties Analysis

A Physical Simulation of Heat Affected Zone of Creep Resistant Steel: Microstructure and Mechanical Properties Analysis

Indentation Plastometry of Welds

Study on the Effect of the Grain Refinement on Mechanical Properties of the P92 Welded Joint

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