10Cr-2Mo-V-Nb 鋼の高温特性と微細組織に関する研究(高温の組織と強度)(<特集>耐熱鋼・耐熱合金)

概要

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In order to develop a new ferritic heat-resisting steel that have high creep rupture strength, good weldability and oxidation resistance at the temperature of 600℃, we performed creep rupture tests, mechanical tests, microstructure observation by transmission electron microscope and X-ray diffraction analysis of electrolytic extraction residue of tested steel. Main results are as follows : (1) It was found that the creep rupture strength of 0.05C-10Cr-2Mo-0.1V-0.05Nb steel was superior to that of SUS 304 steel at the temperature of 600℃. (2) This steel comprises two structure of delta ferrite and tempered martensite. Main precipitation at longer term are M_<23>C_6 and Fe_2Mo at 600℃∿700℃. The precitation of Fe_2Mo type in delta ferrite would increse favorably the high temperature strength as well as the M_<23>C_6 and M_6C carbides.
社団法人日本鉄鋼協会の論文
1979-06-01