Residual Stress State at Different Scales in Deep Drawn Cup of Unstable Austenitic Steel

摘要:

文章预览

In this study, residual stresses state at different scales in the 301LN unstable austenitic steel after deep drawing was determined. The first part of the work deals with the characterization of the martensitic transformation during uniaxial loading. The austenite/martensite content which was determined by X-Ray Diffraction increases until a maximum of 0.6 for 30% strain. Internal stress distribution was determined by coupling in-situ tensile tests with sin²ψ method. As soon as martensite appears, the magnitudes of the internal stresses in this phase were found to be 400 MPa higher than in the austenite. To establish a relation between the complex loading path effect and the phase stress state, deep drawing tests were carried out for different drawing ratios. Both macroscopic tangential residual stresses and residual stresses in the martensite were determined. It appears that the macroscopic tangential residual stresses are positive and increase with increasing drawing ratios and the maximum value is located at middle height of the cup. It is about 850MPa for the Drawing Ratio (DR)=2.00. The tangential residual stresses in the martensite were found to be positive in the external face and have a same evolution as the macroscopic ones.

信息:

期刊:

编辑:

W. Reimers and S. Quander

页数:

95-100

DOI:

10.4028/www.scientific.net/MSF.524-525.95

引用:

M. R. Berrahmoune et al., "Residual Stress State at Different Scales in Deep Drawn Cup of Unstable Austenitic Steel ", Materials Science Forum, Vols. 524-525, pp. 95-100, 2006

上线时间:

September 2006

输出:

价格:

$38.00

[1] H.C. Fiedler, Trans. ASM Vol. 47 (1955), p.267.

[2] G.H. Eichelman, T.C. Hull: Trans. Amer. Soc. Met Vol. 45 (1953), p.77.

[3] T. Angel, J. Iron and Steel Inst Vol. 177 (1954), p.165.

[4] C. B. Post, W.S. Eberly, Trans of the A.S. M, Vol. 39, (1946), pp.868-890.

[5] R. Langeborg, Acta. Met Vol. 12 (1964), p.823.

[6] A.A. Lebedev, V. Kosarchuk: Int. Jour. Plas Vol. 16 (2000), pp.749-767.

[7] G.B. Olson, M. Cohen: Met. Trans Vol. 6A (1975), p.791.

[8] I.B. Timokhina, Proc. Int. Conf. TRIP. Steels Vol. 1 (2002), p.153.

[9] M. Cherkaoui, M. Berveiller: Int.J. Plast Vol. 16(2000), p.1215.

[10] E. Macherauch, P. Muller: Rev. Appl. Phys Vol. 13 (1961), pp.305-312.

[11] M. Weiergraber, A. Graber: Bleche. Rhor. Profile Vol. 32 (1985), p.80.

[12] G. Chappuis, A. Najafi-Zadeh: Mat. Res. Soc. Symp. Proc Vol. 21 (1984), p.699.

[13] M.S. Ragab, H.Z. Orban: J. Mat. Proc. Tech Vol. 99 (2000), p.55.

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