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Abstract

A simple model for the evaluation of the creep damage ( defined as the loss of load bearing capacity of a material due to the grain boundary separation and to the modification of its ultimate tensile strength ) has been developed. With this model it is possible to evaluate the creep damage of the location of fracture on the basis of the results of the creep test itself (initial applied stress and reduction in area of fracture) and of the short term mechanical properties of the material. The model is applied to the stress to rupture results of an austenitic stainless steel based on the Mn-Cr system. The experimental data show that the creep damage decreases in a parabolic way with increasing initial applied stress and with decreasing temperature.

Additional information

Authors: MATERA R, JRC Ispra Establishment, 21020 Ispra (IT)
Bibliographic Reference: Article: Scripta Metallurgica, Vol. 23 (1989), pp. 65-70
Record Number: 198911030 / Last updated on: 1994-12-01
Category: PUBLICATION
Original language: en
Available languages: en
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