Effect of heat treatment conditions on the plastic deformation behavior of the Inconel 706 alloy

Kim, Hyogeon; Oh, Hojun; Bae, Hyo Ju; Sung, Hyokyung; Taleghani, Firooz; Yoon, Eun Yoo; Seol, Jae Bok; Kim, Sangshik; Kim, Jung Gi

doi:10.1016/j.jmrt.2022.10.058

Cited by 4 publications

(4 citation statements)

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“…It has been reported that the smaller grain size tends to homogenize the distribution of PSBs within the grains, also hindering crack initiation along PSBs 43 . Each IN706 forging disc underwent similar heat treatment after forging, and previous micrographic observation suggested that the size and the distribution of strengthening precipitates were similar with each other 44 . Acicular η phase was often observed for the F2 specimens, but not for the F1 specimens.…”

Section: Resultsmentioning

confidence: 65%

“…Low‐ and high‐magnification SEM micrographs of the F2 specimen in Figure 3 show the discontinuous nature of η precipitation within grains. Previous SEM‐EDS analysis on such phase in IN706 showed the enrichment of Ni, Nb, and Ti and precipitate free zone around it, which matched to the nature of η precipitates in IN706 44 . While these η precipitates have been known to be not detrimental to mechanical properties of IN718, 9 no studies are available on elevated temperature LCF behavior of IN706.…”

Section: Resultsmentioning

confidence: 86%

“…43 Each IN706 forging disc underwent similar heat treatment after forging, and previous micrographic observation suggested that the size and the distribution of strengthening precipitates were similar with each other. 44 Acicular η phase was often observed for the F2 specimens, but not for the F1 specimens. Low-and high-magnification SEM micrographs of the F2 specimen in Figure 3 enrichment of Ni, Nb, and Ti and precipitate free zone around it, which matched to the nature of η precipitates in IN706.…”

Section: Resultsmentioning

confidence: 94%

“…Low-and high-magnification SEM micrographs of the F2 specimen in Figure 3 enrichment of Ni, Nb, and Ti and precipitate free zone around it, which matched to the nature of η precipitates in IN706. 44 While these η precipitates have been known to be not detrimental to mechanical properties of IN718, 9 no studies are available on elevated temperature LCF behavior of IN706. The microstructural features, including grain size and the area fraction of carbides, of each specimen are summarized in Table 4.…”

Section: Resultsmentioning

confidence: 99%

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Effect of microstructure on low cycle fatigue behavior of Inconel 706 at 650°C

Lee,

Kim,

Kim

et al. 2023

Fatigue Fract Eng Mat Struct

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Four different types of specimens were prepared from the center and the periphery of two large IN706 forged discs of commercial scale, and low cycle fatigue (LCF) tests were conducted at 650°C.The IN706 specimens with lower LCF lives showed relatively large fraction of cleavage‐like fracture along linearly aligned η (Ni3Ti) precipitates in the area of crack propagation. The amount of η precipitates for those specimens with greater LCF lives was negligible, and the fracture mode of crack propagation was dominantly intergranular. Crack initiation was mainly by persistent slip band (PSB) cracking at the surface, and no notable difference was found for each specimen. The correlation between tensile properties, grain size, and LCF lives of IN706 at 650°C appeared to be not as significant as expected.

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Section: Resultsmentioning

confidence: 65%

Section: Resultsmentioning

confidence: 86%

Section: Resultsmentioning

confidence: 94%

Section: Resultsmentioning

confidence: 99%

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