Research on carbide characteristics and their influence on the properties of welding joints for 2.25Cr1Mo0.25V steel

Qing Li, Guangxu Cheng, Mu Qin, Yafei Wang, Zaoxiao Zhang

研究成果: ジャーナルへの寄稿学術誌査読

5 被引用数 (Scopus)

抄録

The carbide characteristics of 2.25Cr1Mo0.25V steel have an extremely important influence on the mechanical properties of welding joints. In addition, hydrogen resistance behavior is crucial for steel applied in hydrogenation reactors. The carbide morphology was observed by scanning electron microscopy (SEM) and the carbide microstructure was characterized by transmission electron microscopy (TEM). Tensile and impact tests were carried out and the influence of carbides on properties was studied. A hydrogen diffusion test was carried out, and the hydrogen brittleness resistance of welding metal and base metal was studied by tensile testing of hydrogenated samples to evaluate the influence of hydrogen on the mechanical properties. The research results show that the strength of the welding metal was slightly higher and the Charpy impact value was significantly lower compared to the base metal. The hydrogen embrittlement resistance of the welding metal was stronger than that of the base metal. The presence of more carbides and inclusions was the main cause of the decreased impact property and hydrogen brittleness resistance of the welding metal. These conclusions have certain reference value for designing and manufacturing hydrogenation reactors.

本文言語英語
論文番号891
ページ(範囲)1-21
ページ数21
ジャーナルMaterials
14
4
DOI
出版ステータス出版済み - 2月 2 2021
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 材料科学一般
  • 凝縮系物理学

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