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Effect of Vacuum Heat Treatment on Microstructures and Mechanical Properties of 7A52 Aluminum Alloy-Al2O3 Ceramic Brazed Joints

التفاصيل البيبلوغرافية
العنوان: Effect of Vacuum Heat Treatment on Microstructures and Mechanical Properties of 7A52 Aluminum Alloy-Al2O3 Ceramic Brazed Joints
المؤلفون: Deku Zhang, Xusheng Qian, Xiaopeng Li, Kehong Wang
المصدر: Frontiers in Materials, Vol 8 (2021)
بيانات النشر: Frontiers Media S.A., 2021.
سنة النشر: 2021
المجموعة: LCC:Technology
مصطلحات موضوعية: vacuum heat treatment, microstructures, mechanical properties, XRD analysis, EDS analysis, Technology
الوصف: This study investigated the interface morphology, microstructure composition and connection strength of 7A52 aluminum alloy-Al2O3 ceramic brazed joints under heat treatment conditions. Alumina ceramics were first treated with electroless nickel plating, followed by vacuum heat treatment at different temperatures. Then an Al-Si-Mg intermediate layer was placed between the treated alumina ceramic and 7A52 aluminum alloy for brazing under the conditions of welding temperature 590, holding time 1h, pressure 2 MPa. Results showed that when heat treatment was performed at 350°C and below, the nickel-plated metal had an amorphous structure, and when performed at 400°C, the nickel-plated layer had a crystalline structure and the brittle phase Ni3P was precipitated. When the heat treatment temperature was 350°C, the joint shear strength reached the maximum, which was 68.7 MPa.
نوع الوثيقة: article
وصف الملف: electronic resource
اللغة: English
تدمد: 2296-8016
59047275
Relation: https://www.frontiersin.org/articles/10.3389/fmats.2021.634658/full; https://doaj.org/toc/2296-8016
DOI: 10.3389/fmats.2021.634658
URL الوصول: https://doaj.org/article/9dfe9f5a4df44162ade5904727525aab
رقم الانضمام: edsdoj.9dfe9f5a4df44162ade5904727525aab
قاعدة البيانات: Directory of Open Access Journals
الوصف
تدمد:22968016
59047275
DOI:10.3389/fmats.2021.634658