Paper Title:
Peierls Stresses Estimated from CRSS Vs. Temperature Curve and their Relation to the Crystal Structure
  Abstract

Peierls stresses P of a variety of pure crystals, bcc metals, NaCl type crystals, elemental and compound tetrahedrally coordinated crystals, intermetallic compounds and ceramic crystals, have been estimated from the critical resolved shear stress (c) vs. temperature curves. For high P crystals where CRSS data are available only at high temperatures, P has been estimated from the critical temperature T0 at which steep temperature dependence of c vanishes: T0 is related to the kink-pair formation energy which is a function of P, material parameters and dislocation character controlling the deformation. The estimated p/G values are semi-log plotted against h/b value, where G is the shear modulus, h the slip plane spacing and b the Burgers vector. Two facts should be noted. First, P/G values for a group of crystals with the same crystal structure are within a range of a factor of 10. Second, most of the data points lie in between the classical Peierls-Nabarro relation and the Huntington’s modified relation. These facts indicates that Peierls stress is primarily determined by the crystal structure.

  Info
Periodical
Edited by
Pavel Šandera
Pages
97-100
DOI
10.4028/www.scientific.net/KEM.465.97
Citation
Y. Kamimura, K. Edagawa, S. Takeuchi, "Peierls Stresses Estimated from CRSS Vs. Temperature Curve and their Relation to the Crystal Structure", Key Engineering Materials, Vol. 465, pp. 97-100, 2011
Online since
January 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Shigeru Okada, Kunio Kudou, T. Mori, Takaaki Shishido, I. Higashi, Naoki Kamegashira, Kazuo Nakajima, T. Lundström
Abstract:Single crystals of AlMgB 14 and AlMgB 22 were grown from a high-temperature aluminum metal flux in an Ar atmosphere....
365
Authors: S. Shevchenko, A.N. Tereshchenko
Abstract:Dislocation photoluminescence (DPL) is studied at 4.2K in plastically deformed germanium single crystals containing predominantly 60fl...
583
Authors: Yoji Shibutani, Jun Young Park, Masato Wakeda
Abstract:Plastic deformability of the binary (copper and zirconium) amorphous alloy with embedded nanosized crystals under uniaxial tension and...
1323
Authors: Xin Ming Cao, Wei Wei Guo, Xiao Wu Li
Abstract:The plastic deformation behavior of the and [014] Fe-35wt.%Cr alloy single crystals containing fine Cr-rich precipitates were investigated...
1960
Authors: Vladimir I. Nikolaev, Gennady A. Malygin, Serguey A. Pulnev, Pavel N. Yakushev, Victor M. Egorov
Chapter 2: Thermodynamics and Kinetics of Martensitic Transformations
Abstract:Abstract. The paper is a presentation of two new phenomena which have been recently revealed and investigated by authors in well-known shape...
51