Multiscale modeling of back-stress evolution in equal-channel angular pressing: from one pass to multiple passes
Source abstract
Abstract
Fine-grained materials produced by equal-channel angular pressing (ECAP) exhibit kinematic hardening due to the existence of a back-stress. This article presents a new dislocation-based model, which is able to describe the tension/compression asymmetry of the ECAP processed commercial purity aluminum. By introducing strain relaxation, and relating the back-stress to the inhomogeneous dislocation density distribution in cell walls and in cell interiors, the model can accurately predict the evolution of the dislocation densities, the cell size, and the back-stress. Compared to the other back-stress models, it takes into account the microstructure evolution and gives a better prediction.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Microstructure and mechanical properties · Metal Forming Simulation Techniques · Microstructure and Mechanical Properties of Steels
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (29)
Show source-provided references
1. Valiev RZ, Langdon TG (2006) Prog Mater Sci 51:88110.1016/j.pmatsci.2006.02.003 ↗
2. Mughrabi H (1987) Phys Status Solidi A 104:10710.1002/pssa.2211040108 ↗
3. Chen E, Duchêne L, Habraken AM, Verlinden B (in press) Rev Adv Mater Sci
4. Teodosiu C, Hu Z (1998) In: Proceedings of the 19th Risø international symposium on modelling of structures and mechanics of materials, p 149
5. Haddadi H, Bouvier S, Banu M, Maier C, Teodosiu C (2006) Int J Plast 22:222610.1016/j.ijplas.2006.03.010 ↗
6. Estrin Y, Tóth LS, Molinari A, Brechet Y (1998) Acta Mater 46:550910.1016/S1359-6454(98)00196-7 ↗
7. Sauzay M (2008) Int J Plast 24:72710.1016/j.ijplas.2007.07.004 ↗
8. Van Houtte P (1988) Textures Microstruct 8–9:31310.1155/TSM.8-9.313 ↗
9. Van Houtte P, Kanjarla AK, Van Bael A, Seefeldt M, Delannay L (2006) Eur J Mech A Solids 25:63410.1016/j.euromechsol.2006.05.003 ↗
10. Taylor GI (1937) J Inst Met 62:307
11. Tabata T, Yamanaka S, Fujita H (1978) Acta Metall 26:40510.1016/0001-6160(78)90167-0 ↗
12. Tabata T, Fujita H, Hiraoka M-A, Miyake S (1982) Philos Mag A 46:80110.1080/01418618208236932 ↗
13. Müller M, Zehetbauer M, Borbély A, Ungár T (1996) Scr Mater 35:146110.1016/S1359-6462(96)00319-3 ↗
14. Berveiller M, Zaoui A (1979) J Mech Phys Solids 26:32510.1016/0022-5096(78)90003-0 ↗
15. Rauch EF, Schmitt JH (1989) Mater Sci Eng A 113:44110.1016/0921-5093(89)90331-6 ↗
16. Armstrong PJ, Frederick CO (1966) Berkeley Nuclear Laboratories, GEGB report RD/B/N731
17. Iwahashi Y, Wang J, Horita Z, Nemoto M, Langdon TG (1996) Scr Mater 35:14310.1016/1359-6462(96)00107-8 ↗
18. Beyerlein IJ, Tóth LS (2009) Prog Mater Sci 54:42710.1016/j.pmatsci.2009.01.001 ↗
19. Baik SC, Estrin Y, Kim HS, Hellmig RJ (2003) Mater Sci Eng A 351:8610.1016/S0921-5093(02)00847-X ↗
20. Poortmans S, Duchêne L, Habraken AM, Verlinden B (2009) Acta Mater 57:182110.1016/j.actamat.2008.12.023 ↗
21. Kröner E (1961) Acta Metall 9:15510.1016/0001-6160(61)90060-8 ↗
22. Lemoine X, Muller D, Berveiller M (1994) Mater Sci Forum 157–162:182110.4028/www.scientific.net/MSF.157-162.1821 ↗
23. Eshelby JD (1959) Proc R Soc A 252:56110.1098/rspa.1959.0173 ↗
24. Pedersen OB (1990) Acta Metall Mater 38(7):122110.1016/0956-7151(90)90194-L ↗
25. Chaboche JL, Rousselier G (1983) ASME J Press Vessel Technol 105:15310.1115/1.3264257 ↗
26. Feaugas X, Gaudin C (2001) Mater Sci Eng 309–310:38210.1016/S0921-5093(00)01730-5 ↗
27. Duchêne L, Geers MGD, Brekelmans WAM, Chen E, Verlinden B, Habraken AM (2009) Mater Process Text 671. doi: 10.1002/9780470444191.ch7610.1002/9780470444191.ch76 ↗
28. Evers LP, Brekelmans WAM, Geers MGD (2004) J Mech Phys Solids 52:237910.1016/j.jmps.2004.03.007 ↗
29. Evers LP, Brekelmans WAM, Geers MGD (2004) Int J Solids Struct 41:520910.1016/j.ijsolstr.2004.04.021 ↗