EFFECT OF CYCLIC STRAIN AGING ON THE FATIGUE STRENGTH OF SPHEROIDAL GRAPHITE CAST IRON AT ELEVATED TEMPERATURES.

被引：0
|
作者：
Kato, Yozo
Nakano, Norihiko
Hasegawa, Norihiko
机构：
来源：
Nippon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A | 1986年 / 52卷 / 480期
关键词：
FATIGUE OF MATERIALS - High Temperature Effects - IRON AND ALLOYS - Crack Propagation;
D O I：
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学科分类号：
摘要：
Rotating bending fatigue tests of a spheroidal graphite cast iron with a ferrite matrix were performed at temperatures between room temperature and 450 degree C. The behaviors of both the nucleation and the propagation of small surface cracks were observed. Because of the strengthening effect due to cyclic strain aging, the maximum fatigue limit could be seen at about 350 degree C. The peaking phenomenon of fatigue limit, however, was not so striking as that seen in carbon steels. The contribution of cyclic strain aging to the increase in fatigue life was not made so much that the peaking phenomenon could not be readily identified, differing from the remarkable peaking phenomenon in carbon steels.
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页码：1786 / 1792
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