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Effects of Prior Corrosion with and Without Stress on the Mechanical Properties of 7475-T761 Aluminum Alloy
  • ISSN号:1006-7191
  • 期刊名称:《金属学报:英文版》
  • 时间:0
  • 分类:TG174.3[金属学及工艺—金属表面处理;金属学及工艺—金属学] TG146.21[金属学及工艺—金属材料;一般工业技术—材料科学与工程;金属学及工艺—金属学]
  • 作者机构:[1]Corrosion and Protection Research Laboratory, Northwestern Polytechnical University, Xi'an 710072, China, [2]Aviation Industry Corporation of China the First AircraftInstitute, Xi'an 710089, China
  • 相关基金:This work was financially supported by the National Natural Science Foundation of China (No. 51171154) and the National Defense Key Disciplines Laboratory of Light Alloy Processing Science and Technology, Nanchang Hangkong University (Grant No. gf 201401001).
中文摘要:

7475-T761 铝合金的机械性质上的优先的腐蚀的效果被沉浸测试,压力腐蚀测试,阴极充电方法和电气化学的极化测试调查。结果与 3 在答案显示出那优先的腐蚀 ?wt% NaCl 并且 0.5 ?wt% H < 潜水艇 class= “ a-plus-plus ” > 2 O < 潜水艇 class= “ a-plus-plus ” > 2 导致 7475-T761 的机械性质恶化铝合金。而且,延伸显著地减少。这主要被归因于电气化学的腐蚀和氢 embrittlement,腐蚀在起一个主要作用。张力的应力由加速 pitting 腐蚀和氢 embrittlement 支持机械性质的降级。

英文摘要:

The effect of prior corrosion on the mechanical properties of 7475-T761 aluminum alloy was investigated by immersion test, stress corrosion test, cathode charge method and electrochemical polarization test. Results show that prior corrosion in the solution with 3 wt% NaC1 and 0.5 wt% H202 leads to mechanical properties deterioration of 7475-T761 aluminum alloy. Moreover, the elongation decreases significantly. This is mainly attributed to electrochemical corrosion and hydrogen embrittlement, in which corrosion plays a major role. Tensile stress promotes the degradation of the mechanical properties by accelerating the pitting corrosion and hydrogen embrittlement.

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期刊信息
  • 《金属学报:英文版》
  • 中国科技核心期刊
  • 主管单位:中国科协
  • 主办单位:中国金属学会
  • 主编:
  • 地址:沈阳文华路72号
  • 邮编:110016
  • 邮箱:jsxb@imr.ac.cn
  • 电话:024-23971286
  • 国际标准刊号:ISSN:1006-7191
  • 国内统一刊号:ISSN:21-1361/TG
  • 邮发代号:
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  • 被引量:286