Effect of carbon content on the mechanical properties of 10Cr–5W ferritic steels
Effect of carbon content on the mechanical properties of 10Cr–5W ferritic steels
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碳含量对10Cr-5W铁素体钢力学性能的影响
DOI：
10.1016/s0921-5093(99)00780-7
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发表时间：
2000
期刊：
影响因子：
6.4
通讯作者：
Toru Ishiguro
中科院分区：
文献类型：
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作者：
Y. Murata;M. Morinaga;R. Hashizume;Kyohei Takami;T. Azuma;Yasuhiko Tanaka;Toru Ishiguro
本文研究了碳含量对含碳量为0.02 ~ 0.13%（质量分数）的10 Cr-5 W铁素体钢的显微组织、抗拉强度、蠕变强度和断裂韧性的影响。由于低碳钢的马氏体相变温度比高碳钢高，因此低碳钢的马氏体束尺寸较大。随着含碳量的降低，断裂转变温度（FATT）和上架能（USE）均增加。这意味着随着碳含量的降低，韧性降低，塑性增加。优质热处理后，所有试验钢的马氏体板条中都有细小的Laves相析出。在873 K下测得的拉伸强度具有随着C含量的降低而增加的趋势。但即使在5 W铁素体钢中，也需要一定量的C才能在较低的应力水平下保持较长的持久寿命。
The effect of carbon content on the microstrucures, the tensile strength, creep strength and fracture toughness of 10Cr–5W ferritic steels containing from 0.02 to 0.13 mass% C is investigated. The low carbon steels possess the higher Mstemperature than the high carbon steels, so that the packet size of the martensite structure is larger in the low carbon steels. Both the FATT (fracture appearance transition temperature) and the USE (upper shelf energy) increase with decreasing carbon content. This means the decrease of toughness and the increase of ductility with decreasing carbon content. Fine precipitates of the Laves phase are observed in the martensite lath in all experimental steels after quality heat treatment. The tensile strength measured at 873 K has a tendency to increase with decreasing C content. But a certain amount of C is needed even in 5 W ferritic steels to keep the longer creep-rupture life under the lower stress level.
阐明正常压力梯度下湍流边界层的夹带机制
DOI：
--
发表时间：
2020
期刊：
影响因子：
--
作者：
引田優大;望月信介;鈴木博貴
通讯作者：
鈴木博貴