Diffusional effect of pores on the densification in microgravity liquid phase sintered FE-CU alloys

Ye, Saiyin; He, Yubin; Naser, Jamil; Smith, James E.

doi:10.1080/713711189

Cited by 3 publications

(4 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Pyrolysis of polycarbosilane polyme by Key et al 43 A survey of the published literature shows that process modeling of CMCs has been studied by a number of researchers. Processes that have been modeled include RMI, 15,16 CVD, 17,18 CVI, [19][20][21][22] and Sol-Gel Infiltration. 23 Impregnation of alumina matrix in eight-harness satin Nextel 610 fabric has been studied numerically in Ref.…”

Section: Discussionmentioning

confidence: 99%

“…Sintering literature describes the results of the ground-and space-based microgravity experiments. [13][14][15][16][17] Some of these studies supplemented the experimental results by the development of the models based on the continuum theory of sintering 18 taking into account the influence of gravitational forces on densification and microstructure evolution. These works introduce the constitutive model for both liquid-phase and solidstate sintering.…”

Section: Methodsmentioning

confidence: 99%

“…A survey of the published literature modeling of CMCs has been studied by a n ers. Processes that have been modeled CVD, 17,18 CVI, [19][20][21][22] and Sol-Gel Infiltrat of alumina matrix in eight-harness satin has been studied numerically in Ref. [ proaches used in the above work general ing the flow of a high viscosity resin thr and modeling the chemical reactions and during processing.…”

Section: Constitutive Equationmentioning

confidence: 99%

“…The continuum theory of sintering 18 indicates that the "viscous analogy" Ẽ of elastic modulus can be represented as follows: Substituting (3) and ( 4) in ( 16), we can obtain Ẽ as a function of porosity : A survey of the published literature modeling of CMCs has been studied by a n ers. Processes that have been modeled CVD, 17,18 CVI, [19][20][21][22] and Sol-Gel Infiltrat of alumina matrix in eight-harness satin has been studied numerically in Ref. [ proaches used in the above work general ing the flow of a high viscosity resin thr and modeling the chemical reactions and during processing.…”

Section: Approximate Analytical Solutionmentioning

confidence: 99%

See 3 more Smart Citations

Influence of gravity on sintering of 3D‐printed powder components

et al. 2021

View full text Add to dashboard Cite

Present technologies of additive manufacturing (such as binder‐jetting, stereolithography, robocasting, etc.) of complex‐shape powder‐components necessitate fine‐tuning of sintering as applied to highly porous 3D‐printing products. The densification of low‐density, complex shapes requires control of the gravity‐related phenomena to ensure a nearly full and distortion‐free densification. The present study addresses these issues through the involvement of comprehensive finite element simulations, the determination of the additively manufactured powder specimens’ sintering behavior, and the experimental validation of the developed models describing sintering of 3D‐printed objects. The paper describes the application of a numerical approach based on continuum mechanics‐based modeling of the gravity‐induced distortions during sintering of 3D‐printed powder components. The validation of the model is conducted through the comparison with the experimental results obtained for the sintering of the beam‐shape components printed using ceramic stereolithography technology. A practical semi‐analytical criterion, which can be used for sintered 3D‐printed parts’ design recommendations applicable to various material systems, is derived. Based on the obtained design criterion, a design map is developed indicating the allowable 3D‐printed elements’ configurations enabling the avoidance of the excessive gravity‐induced shape distortions.

show abstract