A constitutive model and FE simulation for the sintering process of powder compacts
Source abstract
Abstract
Abstract A model for describing the entire sintering process of powder compacts is presented based on the thermal elasto-viscoplastic theory. The predications of shrinkage and stress changes of WC-6%Co powder compacts during sintering process are simulated using the ABAQUS code. It was found that simulation results for displacements are a good fit of the experimental data. In situ measurement technique and simulation for stresses indicate that maximum tensile stresses always arise at the beginning of cooling stage. The tensile hoop stress σ 33 is a major stress, which may cause surface crack in the cylinder specimen in sintering process and is compared with experimental observation.
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Research context
OpenAlex topics: Advanced materials and composites · Powder Metallurgy Techniques and Materials · Injection Molding Process and Properties
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References (23)
Show source-provided references
1. German · Powder Metall. Int. · 1993 · 25 · 165
2. Consideration of inhomogeneity effects in sintering10.1111/j.1151-2916.1982.tb10340.x ↗
3. Viscoelastic stresses and sintering damage in heterogeneous powder compacts10.1016/0001-6160(86)90066-0 ↗
4. Overview no. 70: On constrained sintering10.1016/0001-6160(88)90189-7 ↗
5. Constrained sintering of a sphere with radial density gradient: viscous model10.1007/s11663-998-0102-2 ↗
6. Constitutive models for the sintering of ceramic components10.1016/0956-7151(92)90183-F ↗
7. Equilibrium pore surfaces, sintering stresses and constitutive equations for the intermediate and late stages of sintering, 2: Diffusional densification and creep10.1016/0956-7151(94)90499-5 ↗
8. A constitutive model for sintering of mixed powder compacts10.4028/www.scientific.net/MSF.308-311.1041 ↗
9. Abouaf · Int. J. Numer. Methods Eng. · 1988 · 25 · 19110.1002/nme.1620250116 ↗
10. Shinagawa · JSME Int. J. A · 1996 · 39 (4) · 565
11. A.F. Plankensteiner, E. Parteder, H. Riedel, D.-Z. Sun, Micromechanism based macrostructural finite element analysis of the sintering behavior of refractory metal parts using ABAQUS, in: Proceedings of the ABAQUS Users’ Confererence, 26–28 May 1999, Chester, UK, pp. 643–657
12. H. Riedel, T. Kraft, Distortion and Cracking of Graded Components during Sintering, Mater. Sci. Forum 308–311 (1999) 1035–104010.4028/www.scientific.net/MSF.308-311.1035 ↗
13. Determination of the mechanical response of sintering compacts by cyclic loading dilatometry10.1111/j.1151-2916.1997.tb02850.x ↗
14. Constrained densification of alumina/zirconia hybrid laminates I: experimental observations of processing defects10.1111/j.1151-2916.1997.tb03075.x ↗
15. Constrained densification of alumina/zirconia hybrid laminates II: viscoelastic stress computation10.1111/j.1151-2916.1997.tb03076.x ↗
16. Finite element simulation of sintering process10.1299/kikaia.62.240 ↗
17. Plasticity theory for porous metals10.1016/0020-7403(76)90030-8 ↗
18. Zienkiewicz · Int. J. Mech. Sci. · 1968 · 10 · 80710.1016/0020-7403(68)90022-2 ↗
19. Nonlinear matrices10.1016/0045-7825(82)90117-7 ↗
20. Elastic moduli of powder metallurgy steels10.1179/pom.1989.32.2.132 ↗
21. M. Gasik, B. Zhang, in: Proceedings of the Symposium Nordic Ceramic98, Tampere, Finland, 20–21 August 1998, pp. 18–20
22. Z. Fang, J.W. Eason, Study of nanostructure WC_Co Composites, in: H. Bildstein, R. Eck (Eds.), Proceeding of the 13th International Pansee Seminar, Metallwerk Plansee Reutte, vol. 3, 1993, pp. 625–637
23. ABAQUS/STANDART User Manual 5.8