Grain Boundary Phase Transformations
Metals and alloys are commonly employed and processed in the form of polycrystalline aggregates. The mechanical strength of such aggregates depends greatly on the strength of the interfaces or grain boundaries that join the individual crystal grains. In general a grain boundary can be expected to be weaker than the grain matrix since the degree of atomic order in the boundary is lower than that in the crystal. Furthermore, the chemical composition with respect to solute components and the diffusive properties of a grain boundary differ from the crystalline matrix.
KeywordsTransformation Temperature Bulk Phase Microscopic Model Homogeneous Phase Transformation Locus
Unable to display preview. Download preview PDF.
- 4.M. L. Kronberg and F. H. Wilson, Trans. AIME, 185, 501, (1949).Google Scholar
- 6.E. W. Hart, in Ultrafine-Grain Metals, J. J. Burke and V. Weiss, Eds., Syracuse University Press, Syracuse, New York, (1970), p.255.Google Scholar
- 8.J. W. Gibbs, Collected Works, Vol. 1, Yale University Press, New Haven (1948), p.219 et seq.Google Scholar
- 11.N. H. Fletcher, in Advances in Materials Research, Vol. 5, H. Herman, Ed., Wiley-Interscience, New York (1971), p.281.Google Scholar
- 12.H. L. Marcus and P. W. Palmberg, Trans. TMS-AIME, 245, 1664, (1969).Google Scholar
- 13.D. F. Stein, A. Joshi, and R. P. LaForce, Trans. ASM, 62, 776, (1969).Google Scholar
- 14.H. Gleiter, Z. Metallkde, 61, 282, (1970).Google Scholar
- 15.K. T. Aust, Can. Met. Quart., 8, 173, (1969).Google Scholar