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Jürgen Boelcke,Bernard Straub,Paul Thielealso been much experimental work on the macroscopic relationships between stress, strain and the crystal axes of single crystals. With this background of knowledge the man who contemplates a crystal aggregate and tries to understand how it behaves when forced to flow, is in much the same position asCuisine 发表于 2025-3-23 23:44:19
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Jürgen Boelcke,Bernard Straub,Paul ThieleThe exceptions (“whiskers”) prove the rule. The behaviour of dislocations is now understood in considerable detail, but their origin is still understood very imperfectly. We know of the ways, in which deformation can multiply the dislocation content of a crystal. We can also see that the recovery prTortuous 发表于 2025-3-24 15:03:04
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Jürgen Boelcke,Bernard Straub,Paul Thieleependent of the rate of strain. Experimental measurements are in broadly satisfactory agreement with this theory for many metals, although reproducible discrepancies are observed which are thought to be due to the influence of the rate of strain in modifying the stress-strain relation . Attemptsdearth 发表于 2025-3-25 01:57:19
Jürgen Boelcke,Bernard Straub,Paul Thieleement de celles d’un cristal unique de même métal. Lorsque pendant la déformation plastique, on observe des lignes de glissement, celles-ci forment plusieurs faisceaux, de directions différentes, qui apparaissent à la surface de chaque grain, dès le début de la déformation. Certains faisceaux s’arrê