سامانه پشتیبانی خدمات اطلاعات

  اخبار و اعلانات

 آمار

تعداد نشریات161
تعداد شماره‌ها6,468
تعداد مقالات69,896
تعداد مشاهده مقاله122,418,156
تعداد دریافت فایل اصل مقاله95,662,911
Fatemi, Seyed Mahmood, Zarei-Hanzaki, Abbas. (1396). Mechanical Behavior of an Ultrafine/Nano Grained Magnesium Alloy. , 50(1), 6-15. doi: 10.7508/jufgnsm.2017.01.02
Seyed Mahmood Fatemi; Abbas Zarei-Hanzaki. "Mechanical Behavior of an Ultrafine/Nano Grained Magnesium Alloy". , 50, 1, 1396, 6-15. doi: 10.7508/jufgnsm.2017.01.02
Fatemi, Seyed Mahmood, Zarei-Hanzaki, Abbas. (1396). 'Mechanical Behavior of an Ultrafine/Nano Grained Magnesium Alloy', , 50(1), pp. 6-15. doi: 10.7508/jufgnsm.2017.01.02
Fatemi, Seyed Mahmood, Zarei-Hanzaki, Abbas. Mechanical Behavior of an Ultrafine/Nano Grained Magnesium Alloy. , 1396; 50(1): 6-15. doi: 10.7508/jufgnsm.2017.01.02

Mechanical Behavior of an Ultrafine/Nano Grained Magnesium Alloy

Journal of Ultrafine Grained and Nanostructured Materials
مقاله 2، دوره 50، شماره 1، شهریور 2017، صفحه 6-15    اصل مقاله (1.52 M)
نوع مقاله: Research Paper
شناسه دیجیتال (DOI): 10.7508/jufgnsm.2017.01.02
نویسندگان
Seyed Mahmood Fatemi* 1؛ Abbas Zarei-Hanzaki2
1School of Mechanical Engineering, Shahid Rajaee Teacher Training University, 136-16785, Tehran, Iran.
2Department of Metallurgical & Materials Engineering, University of Tehran, 515-14395, Tehran, Iran.
چکیده
The application of magnesium alloys is greatly limited because of their relatively low strength and ductility. An effective way to improve the mechanical properties of magnesium alloy is to refine the grains. As the race for better materials performance is never ending, attempts to develop viable techniques for microstructure refinement continue. Further refining of grain size requires, however, application of extreme value of plastic deformation on material. In this work, an AZ31 wrought magnesium alloy was processed by employing multipass accumulative back extrusion process. The obtained microstructure, texture, and room temperature compressive properties were characterized and discussed. The results indicated that grains of 80 nm to 1 μm size were formed during accumulative back extrusion, where the mean grain size of the experimental material was reduced by applying successive ABE passes. The fraction of DRX increased and the mean grain size of the ABEed alloy markedly lowered, as subsequent passes were applied. This helped to explain the higher yield stress govern the occurrence of twinning during compressive loading. Compressive yield and maximum compressive strengths were measured to increase by applying successive extrusion passes, while the strain-to-fracture dropped. The evolution of mechanical properties was explained relying on the grain refinement effect as well as texture change.
کلیدواژه‌ها
Magnesium؛ Nano Grain؛ Twinning؛ Compression
مراجع

1. Valiev R. Nanostructuring of metals by severe plastic deformation for advanced properties. Nature Materials. 2004;3(8):511-516.

2. Khajezade A, Habibi Parsa M, Mirzadeh H, Montazeri-pour M. Grain Refinement Efficiency of Multi-Axial Incremental Forging and Shearing: A Crystal Plasticity Analysis. Journal of Ultrafine Grained and Nanostructured Materials. 2016;49(1):11-16.

3. Figueiredo RB, Langdon TG. Principles of grain refinement and superplastic flow in magnesium alloys processed by ECAP. Materials Science and Engineering: A. 2009;501(1-2):105-114.

4. Kim W, Jeong H, Jeong H. Achieving high strength and high ductility in magnesium alloys using severe plastic deformation combined with low-temperature aging. Scripta Materialia. 2009;61(11):1040-1043.

5. Wang H, Wu P, Wang J. Modelling the role of slips and twins in magnesium alloys under cyclic shear. Computational Materials Science. 2015;96:214-218.

6. Wang J, Zhang D, Li Y, Xiao Z, Fouse J, Yang X. Effect of initial orientation on the microstructure and mechanical properties of textured AZ31 Mg alloy during torsion and annealing. Materials & Design. 2015;86:526-535.

7. Biswas S, Suwas S. Evolution of sub-micron grain size and weak texture in magnesium alloy Mg–3Al–0.4 Mn by a modified multi-axial forging process. Scripta Materialia. 2012;66(2):89-92.

8. Gzyl M, Rosochowski A, Boczkal S, Olejnik L. The role of microstructure and texture in controlling mechanical properties of AZ31B magnesium alloy processed by I-ECAP. Materials Science and Engineering: A. 2015;638:20-29.

9. Yuan W, Panigrahi SK, Su JQ, Mishra RS. Influence of grain size and texture on Hall–Petch relationship for a magnesium alloy. Scripta Materialia. 2011;65(11):994-7.

10. Kim W, An C, Kim Y, Hong S. Mechanical properties and microstructures of an AZ61 Mg alloy produced by equal channel angular pressing. Scripta Materialia. 2002;47(1):39-44.

11. Xing J, Yang X, Miura H, Sakai T. Mechanical properties of magnesium alloy AZ31 after severe plastic deformation. Materials Transactions. 2008;49(1):69-75.

12. Zuberova Z, Estrin Y, Lamark T, Janecek M, Hellmig R, Krieger M. Effect of equal channel angular pressing on the deformation behaviour of magnesium alloy AZ31 under uniaxial compression. Journal of Materials Processing Technology. 2007;184(1-3):294-299.

13. Miura H, Maruoka T, Yang X, Jonas J. Microstructure and mechanical properties of multi-directionally forged Mg–Al–Zn alloy. Scripta Materialia. 2012;66(1):49-51.

14. Yang Q, Ghosh A. Deformation behavior of ultrafine-grain (UFG) AZ31B Mg alloy at room temperature. Acta Materialia. 2006;54(19):5159-5170.

15. Fatemi-Varzaneh S, Zarei-Hanzaki A. Accumulative back extrusion (ABE) processing as a novel bulk deformation method. Materials Science and Engineering: A. 2009;504(1-2):104-106.

16. Fatemi-Varzaneh S, Zarei-Hanzaki A, Naderi M, Roostaei AA. Deformation homogeneity in accumulative back extrusion processing of AZ31 magnesium alloy. Journal of Alloys and Compounds. 2010;507(1):207-214.

17. Fatemi-Varzaneh S, Zarei-Hanzaki A. Processing of AZ31 magnesium alloy by a new noble severe plastic deformation method. Materials Science and Engineering: A. 2011;528(3):1334-1339.

18. Fatemi-Varzaneh S, Zarei-Hanzaki A, Paul H. Characterization of ultrafine and nano grained magnesium alloy processed by severe plastic deformation. Materials Characterization. 2014;87:27-35.

19. Fatemi-Varzaneh S, Zarei-Hanzaki A, Cabrera J, Calvillo P. EBSD characterization of repetitive grain refinement in AZ31 magnesium alloy. Materials Chemistry and Physics. 2015;149:339-343.

20. Li J, Xu W, Wu X, Ding H, Xia K. Effects of grain size on compressive behaviour in ultrafine grained pure Mg processed by equal channel angular pressing at room temperature. Materials Science and Engineering: A. 2011;528(18):5993-8.

21. Yang Q, Ghosh A. Production of ultrafine-grain microstructure in Mg alloy by alternate biaxial reverse corrugation. Acta Materialia. 2006;54(19):5147-5158.

22. Caceres C, Davidson C, Griffiths J, Newton C. Effects of solidification rate and ageing on the microstructure and mechanical properties of AZ91 alloy. Materials Science and Engineering: A. 2002:325(1-2):344-355.

23. Trojanova Z, Caceres C. On the strain to the onset of serrated flow in a magnesium alloy. Scripta Materialia. 2007;56(9):793-796.

24. Dahms M, Bunge HJ. The iterative series-expansion method for quantitative texture analysis. I. General outline. Journal of Applied Crystallography. 1989;22(5):439-447.

25. Barnett M. Twinning and the ductility of magnesium alloys: Part II. Materials Science and Engineering: A. 2007;464(1-2):8-16.

26. Rohatgi A, Vecchio KS, Gray GT. The influence of stacking fault energy on the mechanical behavior of Cu and Cu-Al alloys: deformation twinning, work hardening, and dynamic recovery. Metallurgical and Materials Transactions A. 2001;32(1):135-145.

27. Barnett M. Influence of deformation conditions and texture on the high temperature flow stress of magnesium AZ31. Journal of Light Metals. 2001;1(3):167-177.

28. Meyers M, Vöhringer O, Lubarda V. The onset of twinning in metals: a constitutive description. Acta Materialia. 2001;49(19):4025-4039.

29. Lapovok R, Thomson P, Cottam R, Estrin Y. The effect of grain refinement by warm equal channel angular extrusion on room temperature twinning in magnesium alloy ZK60. Journal of Materials Science. 2005;40(7):1699-1708.

30. Yin S, Wang C, Diao Y, Wu S, Li S. Influence of Grain Size and Texture on the Yield Asymmetry of Mg-3Al-1Zn Alloy. Journal of Materials Science & Technology. 2011;27(1):29-34.

31. Wang Y, Huang J. The role of twinning and untwinning in yielding behavior in hot-extruded Mg-Al-Zn alloy. Acta Materialia. 2007;55(3):897-905.

32. Koike J, Kobayashi T, Mukai T, Watanabe H, Suzuki M, Maruyama K, Higashi K. The activity of non-basal slip systems and dynamic recovery at room temperature in fine-grained AZ31B magnesium alloys. Acta Materialia. 2003;51(7):2055-2065.

33. Koike J. Enhanced deformation mechanisms by anisotropic plasticity in polycrystalline Mg alloys at room temperature. Metallurgical and Materials Transactions A. 2005;36(7):1689-1696.

آمار
تعداد مشاهده مقاله: 1,467
تعداد دریافت فایل اصل مقاله: 1,147


سامانه مدیریت نشریات علمی. قدرت گرفته از سیناوب