Microstructural interpretation of work softening in aluminum

作者: T. H. Alden

DOI: 10.1007/BF02656587

关键词:

摘要: Work softening occurs for deformation of samples in which the existing dislocation microstructure is thermally-unstable. Measurements reported this paper indicate that a key feature determines stability its cellularity. Noncellular structures formed at low temperature alter rapidly to more cellular arrangement when strained higher temperature. The mechanical effect rearrangement tendency decrease flow stress, dynamically determined. It argued same thermal changes structure occur isothermal deformation, even quite temperature, but comparatively heterogeneous fashion.

参考文章(19)
U. F. Kocks, A statistical theory of flow stress and work-hardening Philosophical Magazine. ,vol. 13, pp. 541- 566 ,(1966) , 10.1080/14786436608212647
Robert James Stokes, Effects of Temperature on the Plastic Properties of Aluminium Crystals Proceedings of The Royal Society A: Mathematical, Physical and Engineering Sciences. ,vol. 233, pp. 17- 34 ,(1955) , 10.1098/RSPA.1955.0243
R. M. Fisher, J. S. Lally, MICROPLASTICITY DETECTED BY AN ACOUSTIC TECHNIQUE Canadian Journal of Physics. ,vol. 45, pp. 1147- 1159 ,(1967) , 10.1139/P67-084
THomas H. Alden, The mechanism of ``metarecovery'' and its role in temperature dependent plastic flow Metallurgical Transactions. ,vol. 4, pp. 1047- 1057 ,(1973) , 10.1007/BF02645608
F. H. Hammad, C. N. Ahlquist, W. D. Nix, High temperature work softening yield point phenomena in polycrystalline aluminum Metallurgical Transactions. ,vol. 1, pp. 2179- 2183 ,(1970) , 10.1007/BF02643433
Edward W Hart, Harvey D Solomon, Load relaxation studies of polycrystalline high purity aluminium Acta Metallurgica. ,vol. 21, pp. 295- 307 ,(1973) , 10.1016/0001-6160(73)90017-5
R. Maddin, N.K. Chen, Geometrical aspects of the plastic deformation of metal single crystals Progress in Metal Physics. ,vol. 5, pp. 53- 95 ,(1954) , 10.1016/0502-8205(54)90004-0
T. H. Alden, Cellular microstructure and plasticity of lead at high temperature Metallurgical and Materials Transactions A-physical Metallurgy and Materials Science. ,vol. 6, pp. 1597- 1605 ,(1975) , 10.1007/BF02641973