A Statistical Theory of Solid Solution Hardening

Physica Status Solidi (B): Basic Research - Tập 41 Số 2 - Trang 659-669 - 1970
R. Labusch1
1Institut für Metallphysik der Universität Göttingen

Tóm tắt

AbstractThe critical shear stress τc to move a dislocation through a random array of obstacles in the glide plane is calculated using a statistical theory. The result is an expression for τc in terms of the obstacle concentration, the line tension of the dislocation, and of the interaction force between the dislocation and a single obstacle. Fleischer's solution of the same problem is not reproduced by the statistical theory. Quantitatively the two results are not very different, but our new result is supported by some recent experimental evidence. Furthermore the theory provides a definite prescription how to combine the concentrations and interaction forces of obstacles of different kinds in the expression for τc.

Từ khóa


Tài liệu tham khảo

Haasen P., 1968, Trans. Japan Inst. Metals (Suppl.), 8, 40

Haasen P., 1965, Physical Metallurgy, 281

10.1016/0001-6160(61)90242-5

Fleischer R. L., 1963, Proc. National Physical Laboratory‐Conf., 262

Labusch R., 1969, Crystal Lattice Defects, 1, 1

10.1016/0001-6160(70)90029-5

10.1016/0025-5416(70)90099-6

Kan T., 1970, Z. Metallk., 61, 355

Thông tin
Thông tin xuất bản

Physica Status Solidi (B): Basic Research

Tập 41 Số 2

659-669

Thông tin tác giả