Fatigue Life Properties of Stainless Steels in Wide Ranged Biaxial Stress States using a Hollow Cylinder Specimen
Fatigue Life Properties of Stainless Steels in Wide Ranged Biaxial Stress States using a Hollow Cylinder Specimen
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使用空心圆柱试样在宽范围双轴应力状态下的不锈钢疲劳寿命特性
DOI：
10.1051/matecconf/201930009004
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发表时间：
2019
影响因子：
--
通讯作者：
Takamoto Itoh
中科院分区：
文献类型：
--
作者：
Shunsuke Saito;Fumio Ogawa;Takamoto Itoh
使用 430 型和 316 型不锈钢空心圆柱体样品在室温下进行应力控制多轴疲劳试验。使用了新开发的疲劳试验机，可以对试样施加推拉载荷和内压。对于内部压力，将油放入样本内部。通过结合轴向和环向应力，采用了 7 种循环加载路径；拉式、内压式、推拉式、等双轴式、方形、LT 形和 LC 形。当通过试样内表面的最大米塞斯等效应力范围进行评估时，疲劳寿命根据加载路径而变化。两种钢的疲劳寿命表现出相似的趋势。然而，发现了以下差异。具体而言，430型不锈钢在单轴载荷和多轴试验中的疲劳寿命差异较大，而316型不锈钢的疲劳寿命差异较小。为了讨论两种钢之间疲劳寿命特性的差异，本研究研究了剪切应力范围、平均应力和附加硬化的影响，从而对寿命进行了适当的评估。
Stress controlled multiaxial fatigue tests were carried out using hollow cylinder specimens of type 430 and 316 stainless steels at room temperature. A newly developed fatigue testing machine which can apply push-pull loading and inner pressure to the specimen was used. For inner pressure, oil was put inside of the specimen. 7 types of cyclic loading paths were employed by combining axial and hoop stresses; a Pull, an Inner-pressure, a Push-pull, an Equi-biaxial, a Square-shape, a LT-shape and a LC-shape. Fatigue lives vary depending on the loading path when those were evaluated by the maximum Mises’ equivalent stress range on inner surface of the specimen. The fatigue lives of both the steels showed a similar tendency. However, the following difference was identified. Specifically, differences in fatigue lives of type 430 stainless steel between the uniaxial loading and the multiaxial tests were large, while those of type 316 stainless steel were small. To discuss difference in fatigue life properties between both steels, this study investigates the effect of the shear stress range, mean stress and additional hardening and which leads to evaluate the lives suitably.
拉压扭加载阶段对SUS 304钢高温多轴疲劳寿命的影响
DOI：
10.2472/jsms.36.376
发表时间：
1987
期刊：
Journal of The Society of Materials Science, Japan
影响因子：
--
作者：
明人 新田;隆志 緒方;和夫 桑原
通讯作者：
和夫 桑原