The Mechanical Properties of Perfect Crystals. II. The Stability and Mode of Fracture of Highly Stressed Ideal Crystals

N. H. Macmillan, A. Kelly
1972 Proceedings of the Royal Society A  
The Born stability criteria are applied to variously elastically deformed perfect crystals of argon, represented by a Lennard-Jones potential, and sodium chloride, represented by a Born-Mayer potential. It is shown that when highly strained in tension argon and sodium chloride crystals become unstable before the maximum in the ideal stress-strain curve is reached. The consequent reductions in our previous estimates of the ideal tensile strength (part I) are small (< 10 %) except for
more » ... ept for unconstrained tension of argon (20 %).
doi:10.1098/rspa.1972.0147 fatcat:iireb2l74rerbjjku4yixrnt5i