ISSN:
1573-4803
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract The plastic yield behaviour has been studied as a function of case depth and of test temperature in three case-hardened materials: an internally oxidized copper alloy, an air-hardened titanium alloy and a nitrided steel. In the absence of any residual stresses, the yield stress of a material will rise in the presence of a hard case, and it is suggested that the effect of such residual stresses upon yielding may be predicted by employing a Hill criterion. A macroscopic model is developed on this basis which can account for the lowering of the tensile yield stress in the presence of a case in the nitrided steel and in the titanium alloy, and it is concluded that no effects due to internal stresses are present in internally oxidized copper-beryllium specimens.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01209453
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