Tensile Properties, Ferrite Contents, and Specimen Heating of Stainless Steels in Cryogenic Gas Tests
Tensile Properties, Ferrite Contents, and Specimen Heating of Stainless Steels in Cryogenic Gas Tests
复制标题
低温气体试验中不锈钢的拉伸性能、铁素体含量和试样加热
DOI：
10.1063/1.2192342
复制
发表时间：
2006
期刊：
影响因子：
--
通讯作者：
Y. Ono
中科院分区：
文献类型：
--
作者：
T. Ogata;T. Yuri;Y. Ono
为了获得液氢储罐用材料的力学性能基础数据，我们对SUS 304 L和SUS 316L进行了低温（低于77 K）和氦气环境下的拉伸试验。我们评估拉伸曲线，拉伸性能，铁素体含量，变形和/或断裂模式，以及在4至77 K的测试过程中的试样加热。对于SUS 304 L和316L，拉伸强度在10 K附近显示出小峰值，并且试样加热在30 K以上降低。随着塑性应变的增加，α相的体积分数不断增加，最高可达70%，304 L的塑性应变约为15%，316 L的塑性应变最高可达35%。在低温下，试验温度对应变诱发马氏体相变几乎没有明显的影响。
We performed tensile tests at cryogenic temperatures below 77 K and in helium gas environment for SUS 304L and SUS 316L in order to obtain basic data of mechanical properties of the materials for liquid hydrogen tank service. We evaluate tensile curves, tensile properties, ferrite contents, mode of deformation and/or fracture, and specimen heating during the testing at 4 to 77 K. For both SUS 304L and 316L, tensile strength shows a small peak around 10 K, and specimen heating decreases above 30 K. The volume fraction of α‐phase increases continuously up to 70 % with plastic strain, at approximately 15 % plastic strain for 304L and up to 35 % for 316L. There was almost no clear influence of testing temperature on strain‐induced martensitic transformation at the cryogenic temperatures.