周孟,禹兴胜,石如星,王文焱,陈明,楚春贺

• 1:河南科技大学材料科学与工程学院
• 2:中信重工机械股份有限公司
• 3:洛阳中重铸锻有限责任公司

摘要(Abstract)：

通过添加微量Ti、Nb元素制备出含有纳米析出相的加氢反应器用12Cr2Mo1V钢，并研究了钢中纳米析出相类型及其对抗氢脆性能的影响。结果表明：12Cr2Mo1V钢添加Ti、Nb元素并经高温回火处理后形成的碳化物主要为M_(23)C_6、M_3C和MC,其中MC型碳化物为(Ti, Nb)C,弥散分布于基体中，平均尺寸为10～20 nm;(Ti, Nb)C作为主要的氢捕获位点，能够在充氢过程中捕获更多的氢，降低基体中可扩散氢浓度；实验钢充氢后的抗拉强度呈增加趋势，由661 MPa提升至690 MPa,表现出优异的抗氢脆性能，实验钢充氢前后均表现出塑性断裂，充氢后韧窝的形貌表现出数量减少而韧窝深度增加的趋势。

关键词(KeyWords)： 12Cr2Mo1V钢;微合金化;纳米析出相;抗氢脆性能

Abstract:

Keywords:

基金项目(Foundation): 中国博士后科学基金特别资助项目(2021T140779)

作者(Author): 周孟,禹兴胜,石如星,王文焱,陈明,楚春贺

DOI: 10.13289/j.issn.1009-6264.2024-0506

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