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Enhancing the fatigue property of rolled AZ31 magnesium alloy by controlling {10-12} twinning-detwinning characteristics

Published online by Cambridge University Press:  31 January 2011

Seong-Gu Hong ,
Sung Hyuk Park  and
Chong Soo Lee
Seong-Gu Hong*
Affiliation:
Division of Industrial Metrology, Korea Research Institute of Standards and Science, Daejeon 305-340, Republic of Korea
Chong Soo Lee*
Affiliation:
Department of Materials Science and Engineering, Pohang University of Science and Technology, Pohang 790-784, Republic of Korea
*
a)Address all correspondence to this author. e-mail: sghong@kriss.re.kr; hsg@kaist.ac.kr
b)Address all correspondence to this author. e-mail: cslee@postech.ac.kr
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Abstract

An improvement of the fatigue resistance of rolled AZ31 magnesium alloy was attempted by reducing the tensile mean stress developed during fatigue deformation, which was achievable by tailoring the {10-12} twinning-detwinning characteristics of the material through the precompression process. The modification of the {10-12} twinning-detwinning characteristics made it possible to control the plastic deformation mechanisms activated during fatigue deformation so that the imposed tensile strain could be fully accommodated by detwinning alone, which led to a significant reduction of tensile flow stress, finally resulting in the reduction of mean stress.

Keywords

MgFatigueMicrostructure
Type
Articles
Information
Journal of Materials Research , Volume 25 , Issue 4 , April 2010 , pp. 784 - 792
Copyright
Copyright © Materials Research Society 2010

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References

REFERENCES

1.Barnett, M.R.Twinning and the ductility of magnesium alloys: Part I: “Tension” twins. Mater. Sci. Eng., A 464, 1 (2007)Google Scholar
2.Jiang, L., Jonas, J.J., Luo, A.A., Sachdev, A.K., Godet, S.Influence of {10-12} extension twinning on the flow behavior of AZ31 Mg alloy. Mater. Sci. Eng., A 445–446, 302 (2007)Google Scholar
3.Prasad, Y.V.R.K., Rao, K.P.Effect of crystallographic texture on the kinetics of hot deformation of rolled Mg–3Al–1Zn alloy plate. Mater. Sci. Eng., A 432, 170 (2006)Google Scholar
4.Chino, Y., Kimura, K., Mabuchi, M.Deformation characteristics at room temperature under biaxial tensile stress in textured AZ31 Mg alloy sheets. Acta Mater. 57, 1476 (2009)Google Scholar
5.Agnew, S.R., Duygulu, Ö.Plastic anisotropy and the role of non-basal slip in magnesium alloy AZ31B. Int. J. Plast. 21, 1161 (2005)CrossRefGoogle Scholar
6.Cáceres, C.H., Sumitomo, T., Veidt, M.Pseudoelastic behaviour of cast magnesium AZ91 alloy under cyclic loading–unloading. Acta Mater. 51, 6211 (2003)CrossRefGoogle Scholar
7.Nave, M.D., Barnett, M.R.Microstructures and textures of pure magnesium deformed in plane-strain compression. Scr. Mater. 51, 881 (2004)CrossRefGoogle Scholar
8.Choi, S.H., Shin, E.J., Seong, B.S.Simulation of deformation twins and deformation texture in an AZ31 Mg alloy under uniaxial compression. Acta Mater. 55, 4181 (2007)CrossRefGoogle Scholar
9.Park, S.H., Hong, S.G., Lee, C.S.Activation mode dependent {10-12} twinning characteristics in a polycrystalline magnesium alloy. Scr. Mater. 62, 202 (2010)CrossRefGoogle Scholar
10.Kleiner, S., Uggowitzer, P.J.Mechanical anisotropy of extruded Mg–6% Al–1% Zn alloy. Mater. Sci. Eng., A 379, 258 (2004)CrossRefGoogle Scholar
11.Wang, Y.N., Huang, J.C.The role of twinning and untwinning in yielding behavior in hot-extruded Mg–Al–Zn alloy. Acta Mater. 55, 897 (2007)CrossRefGoogle Scholar
12.Lou, X.Y., Li, M., Boger, R.K., Agnew, S.R., Wagoner, R.H.Hardening evolution of AZ31B Mg sheet. Int. J. Plast. 23, 44 (2007)CrossRefGoogle Scholar
13.Proust, G., Tomé, C.N., Jain, A., Agnew, S.R.Modeling the effect of twinning and detwinning during strain-path changes of magnesium alloy AZ31. Int. J. Plast. 25, 861 (2009)CrossRefGoogle Scholar
14.Yin, S.M., Yang, H.J., Li, S.X., Wu, S.D., Yang, F.Cyclic deformation behavior of as-extruded Mg–3%Al–1%Zn. Scr. Mater. 58, 751 (2008)Google Scholar
15.Wu, L., Jain, A., Brown, D.W., Stoica, G.M., Agnew, S.R., Clausen, B., Fielden, D.E., Liaw, P.K.Twinning–detwinning behavior during the strain-controlled low-cycle fatigue testing of a wrought magnesium alloy, ZK60A. Acta Mater. 56, 688 (2008)Google Scholar
16.Wu, L., Agnew, S.R., Brown, D.W., Stoica, G.M., Clausen, B., Jain, A., Fielden, D.E., Liaw, P.K.Internal stress relaxation and load redistribution during the twinning–detwinning-dominated cyclic deformation of a wrought magnesium alloy, ZK60A. Acta Mater. 56, 3699 (2008)CrossRefGoogle Scholar
17.Evans, P.R.V., Owen, N.B., McCartney, L.N.Mean stress effects on fatigue crack growth and failure in a rail steel. Eng. Fract. Mech. 6, 183 (1974)Google Scholar
18.Bao, Y., Treitler, R.Ductile crack formation on notched Al2024-T351 bars under compression–tension loading. Mater. Sci. Eng., A 384, 385 (2004)Google Scholar
19.Yin, S.M., Yang, F., Yang, X.M., Wu, S.D., Li, S.X., Li, G.Y.The role of twinning–detwinning on fatigue fracture morphology of Mg–3%Al–1%Zn alloy. Mater. Sci. Eng., A 494, 397 (2008)CrossRefGoogle Scholar
20.Landgraf, R.W.Achievement of high fatigue resistance in metals and alloys. ASTM Spec. Tech. Publ. 467, 3 (1970)Google Scholar
21.Suresh, S.Fatigue of Materials (Cambridge University Press, Cambridge, UK 1998)Google Scholar