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首页> 外文期刊>Journal of Materials Engineering and Performance >Heat Strength Evaluation and Microstructures Observation of the Welded Joints of One China-Made T91 Steel
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Heat Strength Evaluation and Microstructures Observation of the Welded Joints of One China-Made T91 Steel

机译：一种国产T91钢焊接接头的热强度评估和组织观察

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摘要

T91 (9CrlMoVNb), the martensitic heat-resistant steel, is widely applied in industries like power generation, petrochemical, nuclear, etc., and a wealth of researches has been conducted on its properties so far. However, actually for China, T91 was begun to be domestically manufactured only from the end of last century. Hence, thorough assessments of the China-made T91 steels are always urgently required, especially for its welded joints. In this paper, the relationship between mechanical properties and microstructures of the welded joints of one China-made T91 steel was experimentally discussed. Moreover, aging test and creep rupture test were utilized for both analyzing the heat strength and predicting the service life of the joints. Results showed that welded joints of this China-made T91 steel could exhibit sufficient strength under the operating conditions of most nuclear reactors used nowadays.
机译：马氏体耐热钢T91（9CrlMoVNb）广泛用于发电，石化，核能等行业，迄今为止，对其性能进行了大量研究。但是，实际上对于中国，T91只是从上世纪末才开始国产。因此，始终迫切需要对中国制造的T91钢进行全面评估，尤其是对于其焊接接头。通过实验探讨了一种国产T91钢焊接接头的力学性能与组织之间的关系。此外，还使用了老化测试和蠕变断裂测试来分析接头的热强度和预测使用寿命。结果表明，这种中国制造的T91钢的焊接接头在当今使用的大多数核反应堆的运行条件下都能显示出足够的强度。

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