2018
DOI: 10.1016/j.msea.2017.11.125
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Correlation of mechanical properties to microstructure in Inconel 718 fabricated by Direct Metal Laser Sintering

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Cited by 66 publications
(20 citation statements)
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“…Since Laves phase is present in the as-built SLM IN718 microstructures, a homogenization step (see Table 2.4) is necessary to dissolve it if HIP is not applied. Mostly the heat treatments reported in the literature [113,115,117,124,[133][134][135][136][137] follow or are similar to the standards that established for the forged, wrought and cast components. And after these heat treatments, the tensile properties or hardnesses of SLM IN718 are comparable to or even slightly better than the conventional counterparts.…”
Section: Ebm and Slm In718mentioning
confidence: 83%
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“…Since Laves phase is present in the as-built SLM IN718 microstructures, a homogenization step (see Table 2.4) is necessary to dissolve it if HIP is not applied. Mostly the heat treatments reported in the literature [113,115,117,124,[133][134][135][136][137] follow or are similar to the standards that established for the forged, wrought and cast components. And after these heat treatments, the tensile properties or hardnesses of SLM IN718 are comparable to or even slightly better than the conventional counterparts.…”
Section: Ebm and Slm In718mentioning
confidence: 83%
“…Therefore, it is common to see more significant grain growth after HIP in the SLM IN718 than in the EBM counterpart [128,131]. The common HIP condition for EBM IN718 [95,98] and SLM IN718 [127,132,133] reported in literature is at the range of 1180 ∼ 1200 • C .…”
Section: Ebm and Slm In718mentioning
confidence: 99%
“…Also, δ phase (Ni 3 Nb) is a vital phase, which precipitated in the range of 750~1020 °C [ 6 , 7 ]. In general, in Alloy 718, the precipitation of δ phase does not provide any strengthening mechanism, but it controls the microstructure [ 8 ]. It is well established that Alloy 718 can be directly used for various structural applications with no heat treatment thanks to the standard precipitation treatment leading to an increase in strength [ 9 , 10 ].…”
Section: Introductionmentioning
confidence: 99%
“…In addition, Farber et al have found the relationship between the mechanical properties and microstructure of four different combinations of Alloy 718: solution and ageing heat treatment, heat treatment along with hot isostatic pressing, heat treatment along with shot peening, and heat treatment together with hot isostatic pressing and shot peening. The results showed that even though the heat treated specimen exhibited better results in terms of surface hardness, the specimen subjected to heat treatment and hot isostatic pressing revealed similar results in terms of tensile strength and ductility, in which the surface hardness was found to be much lower compared to that of the heat treated one [ 8 ]. Surface modification methods such as shot peening and laser shock peening have also been widely used to increase the mechanical properties of Alloy 718.…”
Section: Introductionmentioning
confidence: 99%
“…(needle shape as shown in point 4 in Figure 43). δ phase in Inconel 718 is useful for controlling grain size, particular if it precipitates along the grain boundaries [74]. Based on these images, there is not delta phase in the AM material under the as-printed condition;…”
Section: Base Metal Microstructure Changes After 900°c Oxidation Testmentioning
confidence: 95%