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contributor authorM. Okazaki
contributor authorT. Koizumi
contributor authorI. Hattori
contributor authorT. Ikeda
date accessioned2017-05-08T23:20:23Z
date available2017-05-08T23:20:23Z
date copyrightOctober, 1985
date issued1985
identifier issn0094-4289
identifier otherJEMTA8-26907#346_1.pdf
identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/99919
description abstractThe low-cycle fatigue crack growth behavior of Type 304 stainless steel, when the slow-fast type strain cycles were introduced into the repeat of fast-fast type strain cycle either in a periodical type (denoted as Type-I sequence) or in a block type (denoted as Type-II sequence), was investigated at the temperature of 873 K. It was found that an inertia accelerating phenomenon of crack growth rate occurred during the repeat of fast-fast type strain cycle, which followed the slow-fast type strain cycles introduced. It was also found that the above inertia accelerating phenomenon led to the significantly shorter fatigue crack propagation life than that evaluated from the linear damage summation rule, especially in the Type-I sequence. The observations of the longitudinal section through the specimen and the distribution of Vickers hardness suggested that a creep affected zone would be produced at the crack tip by the introduction of slow-fast type strain cycles, and it would cause the inertia acceleration of crack growth rate. In this work, the creep affected zone size, Rc was defined by the size of the region where the inertia acceleration of crack growth rate occurred. There was a linear relationship between Rc thus defined and the range of creep J-integral, which was produced just when the introduction of slow-fast type strain cycles was finished. Furthermore, based on the results thus obtained, the predicting method of crack growth rates both in the Type-I sequence and in the Type-II sequence was discussed.
publisherThe American Society of Mechanical Engineers (ASME)
titleLow Cycle Fatigue Crack Growth Behavior at Elevated Temperature Under the Combined Strain-Wave-Shape Cycling in Type 304 Stainless Steel
typeJournal Paper
journal volume107
journal issue4
journal titleJournal of Engineering Materials and Technology
identifier doi10.1115/1.3225831
journal fristpage346
journal lastpage355
identifier eissn1528-8889
keywordsTemperature
keywordsWaves
keywordsFracture (Materials)
keywordsLow cycle fatigue
keywordsShapes
keywordsStainless steel
keywordsCycles
keywordsInertia (Mechanics)
keywordsCreep
keywordsFatigue cracks AND Vickers hardness
treeJournal of Engineering Materials and Technology:;1985:;volume( 107 ):;issue: 004
contenttypeFulltext


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