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Application of Monkman-Grant Relationships to Type 316L(N) Stainless Steel
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 Title & Authors
Application of Monkman-Grant Relationships to Type 316L(N) Stainless Steel
Kim, U-Gon; Kim, Dae-Hwan; Ryu, U-Seok;
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Creep tests for type 316L(N) stainless steel were carried out using constant-load creep machines at 55, 575 and . Material constants necessary to predict creep rupture time were obtained from the experimental creep data. And the applicability of Monkman-Grant(M-G) and modified M-G relationships was discussed. The log-log plot of M-G relationship between the rupture time(,) and the minimum creep rate ($ _m$) was dependent on test temperatures. The slope of m was 1,05 at 55 and m was 1.30 at . On the other hand, the log-log plot of modified M-G relationship between $t_r/_r$, and $ _m$ was independent on stresses and temperatures. That is, the slope of m' was approximately 1.35 in all the data. Thus, modified M-G relationship for creep life prediction could be utilized more reasonably than that of M-G relationship for type 316L(N) stainless steel. It was analyzed that the constant slopes regardless of temperatures or applied stresses in the modified relationship were due to an intergranular fracture grown by wedge-type cavities.
Monkman-Grant Relationship;Modified Monkman -Grant Relationship;316L;Creep Curve;Creep Rupture;Minimum Creep Rate;Intergranular Fracture;Creep Cavity;N Stainless Steel;
 Cited by
Creep Characterization of Type 316LN and HT-9 Stainless Steels by the K-R Creep Damage Model,김우곤;김성호;류우석;

Journal of Mechanical Science and Technology, 2001. vol.15. 11, pp.1463-1471
K-R 손상이론에 의한 316LN 스테인리스강의 크리프 설계,김우곤;김대환;류우석;

대한기계학회논문집A, 2001. vol.25. 2, pp.296-303 crossref(new window)
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