Application of small punch creep test for Inconel 617 alloy weldment

Kim, B.J.; Sim, Yun Su; Lee, J.H.; Kim, M.K.; Lim, Byeong Soo

doi:10.1016/j.proeng.2011.04.425

Cited by 19 publications

(9 citation statements)

References 9 publications

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“…(10) and (11) are applicable for specific geometry and is not valid when the indenter radius or the radius of the receiving hole is changed.…”

Section: Relationship Between Deflection and Strainmentioning

confidence: 99%

“…Local creep properties of weld joint comprising distinct and heterogeneous zones, such as base metal, weld metal, fine-grained and coarse grained parts of heat affected zone, etc., can be examined by SPC technique. SPC technique was applied to measure the creep properties across variety of weld joints made of P92 steel [9], reduced activation ferritic steel [10], Inconel 617 alloy [11], P91 steel [12,13], etc. SPC technique was used to optimize the nitrogen content in 316LN stainless steel on the basis of creep strength [14].…”

Section: Introductionmentioning

confidence: 99%

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Small Punch Creep deformation and rupture behavior of 316L(N) stainless steel

Kumar

Laha

2015

Materials Science and Engineering: A

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“…(10) and (11) are applicable for specific geometry and is not valid when the indenter radius or the radius of the receiving hole is changed.…”

Section: Relationship Between Deflection and Strainmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Small Punch Creep deformation and rupture behavior of 316L(N) stainless steel

Kumar

Laha

2015

Materials Science and Engineering: A

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“…Hitherto, the SP test has been most widely used for assessing creep behaviour of bulk steels used in nuclear and conventional power plant [21] where its ability to characterise in-service materials using only a small volume of material has been of significant benefit. More recently, it has been shown capable of analysing different zones of weldments in both creep resistant steel [22] and a nickel-based alloy [23]. However, SP testing of MCrAlY bond coats does not appear to have been previously reported.…”

Section: Introductionmentioning

confidence: 99%

Application of small punch creep testing to a thermally sprayed CoNiCrAlY bond coat

Chen

Hyde

Voisey

et al. 2013

Materials Science and Engineering: A

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High velocity oxy-fuel thermal spraying was used to prepare free-standing CoNiCrAlY ) bond coat alloy samples approximately 0.5 mm thick. Creep tests were conducted at 750 C on these samples using a small punch (SP) creep test method. The samples were characterised before and after creep testing using scanning electron microscopy with electron backscatter diffraction (EBSD). EBSD revealed a two phase fcc -Ni and bcc B2 β-NiAl microstructure with grain sizes ~ 1-2 m for both phases, which did not change significantly following testing. The constant temperature SP test data were characterised by a minimum creep strain rate, , and a total time to failure, t f , at different applied stresses. The data are fitted to conventional power law equations with a stress exponent for creep close to 8 in the Norton power law and between 7 and 10 in the Monkman-Grant creep rupture law. Creep rupture was predominantly due to creep cavitation voids nucleating at both the γ -β interphase boundaries and the  - grain boundaries leading to final failure by void linkage. However, rupture life was influenced by the quantity of oxide entrained in the coating during the spray deposition process.

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“…Currently, the SPCT is most widely used for assessing the creep behaviour of bulk steels in nuclear and conventional power plants, [2][3][4][5] creep-resistant alloys 6 and heat-affected zones of weldments. [7][8][9] A draft code of practice has been established in order to standardise the testing procedure, the geometrical dimensions and the experimental set-up. 10 The SPCT method can be used with miniaturised disc specimens (8-10 mm in diameter and $0.5 mm in thickness) to acquire the creep data of materials at high temperatures.…”

Section: Introductionmentioning

confidence: 99%

Effects of pre-cracking on small punch creep testing of a vacuum plasma-sprayed CoNiCrAlY coating

Chen

Hyde

Voisey

et al. 2016

Proceedings of the Institution of Mechanical Engineers, Part L:

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This paper presents the results of small punch creep testing (SPCT) of a vacuum plasma-sprayed (VPS) CoNiCrAlY coating (Co-31.7%, Ni-20.8%, Cr-8.1%, Al-0.5%, Y, all in wt%) carried out at 750 C. Coating cross-sections, after initial heat treatment, after sample clamping in the test rig prior to testing and after SPCT, were examined using scanning electron microscopy (SEM). A dual phase structure consisting of a fcc-Ni matrix and a bcc-NiAl secondary phase was found to exist. A large number of partially melted powder particles, with a semi-continuous layer surrounding most of the partially melted particles, were found in the coating. Pre-cracking was observed to occur around the partially melted particles after sample clamping was applied in the test rig prior to testing. This was due to the inherent brittleness of the layer around those particles. Very short failure times were obtained from the SPCT of the specific VPS CoNiCrAlY coatings, due to the pre-existing cracks formed during sample clamping.

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Application of small punch creep test for Inconel 617 alloy weldment

Cited by 19 publications

References 9 publications

Small Punch Creep deformation and rupture behavior of 316L(N) stainless steel

Small Punch Creep deformation and rupture behavior of 316L(N) stainless steel

Application of small punch creep testing to a thermally sprayed CoNiCrAlY bond coat

Effects of pre-cracking on small punch creep testing of a vacuum plasma-sprayed CoNiCrAlY coating

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