SiC<sub>p</sub>/2024复合材料的氢脆敏感性研究

姚红宇; 涂铭旌; 宋余九; 马宗跃

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SiC_p/2024复合材料的氢脆敏感性研究

1.
北京科技大学表面科学与腐蚀工程系, 北京 100083;
2.
四川联合大学金材系, 成都 610065;
3.
西安交通大学材料科学与工程学院, 西安 710049;
4.
西北工业大学航空制造工程系, 西安 710072

计量
- 文章访问数: 816
- PDF下载量: 468
- 被引次数: 0
出版历程
- 收稿日期: 1994-09-13
- 修回日期: 1994-11-11
- 刊出日期: 1996-06-01

STUDY ON THE SUSCEPTIBILITY OF SIC_p/2024 COMPOSITE TO HYDROGEN ENERITTLEMENT

1.
Department of Surface Science & Corrosion Engineering, Beijing University of Science and Technology, Beijing 100083;
2.
Department of Metallic Materials, Sichuan United University, Chengdu 610065;
3.
College of Materials Science and Engineering, Xi'an Jiao Tong University, Xi'an 710049;
4.
Department of Aeronautical Manufacturing Engineering, Northwestern Polytechnical University Xi'an 710072

摘要

摘要: 在浸泡、阴极极化、阴极极化同时迭加拉伸变形、添加As₂O₃毒化剂等常见致氢条件下,通过慢应变速率拉伸试验研究了SiC_p/2024复合材料的力学性能,考察了断口形貌.测定了该材料在按几种常用充氢条件充氢后的氢含量.发现虽然强烈阴极极化使材料力学性能下降,但其原因在于阴极极化引起的碱性腐蚀,与氢脆无关.获得了不同于前人研究的新结论:在本文试验条件下SiC_p/2024材料不发生氢脆,也不发生不可逆氢损伤,其原因与该材料难以充入氢有关.
- 金属基复合材料 /
- 铝合金 /
- 氢脆
Abstract: The mechanical performance of SiC_p/2024 composite,after pre-charged with hydrogen and during the dynamical cathodic hydrogen-charging,is studied by the slow strain rate tension technique.The fractographs are examined.The hydrogen content of the composite,alter charged with hydrogen under several usually employed charging conditions,is determined.It is revealed that strong cathodic polarization deteriorates the mechanical performance for the reason of alkaline corrosion caused by the polarization.This deterioration has nothing to do with hydrogen embrittlement.The results lead to a new conclusion,that under the present test conditions,the composite suffers neither hydrogen embrittlement nor irreversible hydrogen damage.This is related to the fail in hydrogen-chaging.
- metal matrix composite /
- aluminum alloy /
- hydrogen embrittlement