Quantitative Relation of Strengthening in SUS 304 Steel Due to Deformation-Induced Transformation : Series A : Solid-Mechanics, Strength of Materials
Quantitative Relation of Strengthening in SUS 304 Steel Due to Deformation-Induced Transformation : Series A : Solid-Mechanics, Strength of Materials
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SUS 304 钢因变形诱发转变而强化的定量关系：A 系列：固体力学、材料强度
DOI：
10.1299/kikaia.52.2545
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发表时间：
1987
期刊：
影响因子：
--
通讯作者：
Michihiro Sakamoto
中科院分区：
文献类型：
--
作者：
A. Takimoto;T. Inoue;Shunji Shoda;Michihiro Sakamoto
采用多衍射峰法和钼靶，通过 X 射线研究了 SUS 304 钢在 20°C 至 -196°C 温度范围内拉伸变形引起的 α' 和 e' 马氏体相的体积分数。前者通过剪切带交叉机制很好地表达了关系，后者与总塑性应变的指数函数关系良好。双相钢在这些温度下的实验塑性应变和流动应力由此处提出的变体积模型方程表示。总塑性应变方程包括奥氏体相和马氏体相的成分以及相变应变，总塑性应变和相变体积分数越大，则相变应变也越大。总塑性应力方程包括奥氏体相和马氏体相的两个分量以及e'马氏体率的少量附加分量以及由于奥氏体相中的相变应变而产生的少量应力松弛。在 20°C 下通过 X 射线残余应力测量获得的这些应变的实验数据表明，预测关系与数据非常吻合。
Volume fractions of α' and e' martensite phases induced in tensile deformation in SUS 304 steel at temperature ranges from 20°C to -196°C are investigated by X-ray using the multi-diffraction peak method with an Mo-target. The former is presented well with the relation by the shear-band intersection mechanism and the latter with an exponential function of total plastic strain. The experimental plastic strain and flow stress of a dual phase steel at those temperatures are expressed by the variable volume model equations proposed here. The equation of total plastic strain comprises both components of the austenite and martensite phases and the transformation strain which is larger the larger the total plastic strain and the volume fraction of transformation. The equation of total plastic stress comprises both components of the austenite and martensite phases and a small additive component of the e' martensite rate and a small stress relaxation due to transformation strain in the austenite phase. Experimental data of these strains obtained from the X-ray residual stress measurement at 20°C have shown that the predicted relations agree excellently with the data.