钼对超级奥氏体不锈钢σ相析出行为的影响

IF 1.3 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Emerging Materials Research Pub Date : 2024-02-12 DOI:10.1680/jemmr.23.00085

Qun-kun Hu, Hua-yun Du, Xiaolu Sun, Li-feng Hou, Qian Wang, Zhanhu Guo, Handong Li, Jincheng Fan, Yinghui Wei, Xiao-da Liu, Huan Wei, Xingkui Guo

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引用次数: 0

摘要

通过扫描电子显微镜、X射线衍射和透射电子显微镜研究了不同Mo含量的超级奥氏体不锈钢904L（4.32% Mo）、254SMo（6.06% Mo）和AL-6XN（6.29% Mo）在800℃-900℃下的时效析出行为，并探讨了Mo含量对常用超级奥氏体不锈钢σ相析出行为的影响。研究了钼含量对常用超级奥氏体不锈钢σ相析出行为的影响。结果表明，不同Mo含量的超级奥氏体不锈钢在等温时效过程中形成了不同数量和形状的σ相，其中254SMo和AL-6XN的σ相数量远大于904L，且σ相的形状主要表现为粗针状和延伸状，而904L的σ相表现为细粒状。

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Effect of Mo on the σ phase precipitation behavior of super austenitic stainless steel

The aging precipitation behavior of super austenitic stainless steels 904L (4.32% Mo), 254SMo (6.06% Mo), and AL-6XN (6.29% Mo) with different Mo contents at 800°C-900°C was investigated by scanning electron microscopy, X-ray diffraction, and transmission electron microscopy, and the effect of Mo content on the σ-phase precipitation behavior of commonly used super austenitic stainless steels was explored. The effect of Mo content on the σ-phase precipitation behavior of commonly used super austenitic stainless steel was investigated. The results show that the super austenitic stainless steels with different Mo contents formed different numbers and shapes of σ-phases in the isothermal aging process, and the number of σ-phases of 254SMo and AL-6XN is much larger than that of 904L, and the shape of the σ-phases mainly shows coarse acicularity and elongation, while the σ-phases of 904L show fine granularity.

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来源期刊

Emerging Materials Research MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

4.50

自引率

9.10%

发文量

期刊介绍： Materials Research is constantly evolving and correlations between process, structure, properties and performance which are application specific require expert understanding at the macro-, micro- and nano-scale. The ability to intelligently manipulate material properties and tailor them for desired applications is of constant interest and challenge within universities, national labs and industry.