التفاصيل البيبلوغرافية
| العنوان: |
In situ SEM study on tensile fractured behavior of Al/steel laser welding-brazing interface |
| المؤلفون: |
Hongbo Xia, Liqun Li, Caiwang Tan, Jin Yang, Haoyue Li, Wei Song, Kaiping Zhang, Qian Wang, Ninshu Ma |
| المصدر: |
Materials & Design, Vol 224, Iss , Pp 111320- (2022) |
| بيانات النشر: |
Elsevier, 2022. |
| سنة النشر: |
2022 |
| المجموعة: |
LCC:Materials of engineering and construction. Mechanics of materials |
| مصطلحات موضوعية: |
Laser welded–brazed Al/steel interface, In situ SEM observations, Fracture behavior, Materials of engineering and construction. Mechanics of materials, TA401-492 |
| الوصف: |
Microcracks initiated and propagated behaviors in Al/steel interface determined interfacial bonding strength and this was observed by in situ scanning electron microscopy (SEM) technology. Interface without or with discontinuous intermetallic compound (IMC) had low bonding strength owing to insufficient metallurgical bonding. When interface was joined with 2–3 μm serration–shaped τ5–Fe1.8Al7.2Si, largest bonding strength of 205 MPa was obtained. Microcracks initiated at protrusion of τ5–Fe1.8Al7.2Si and then propagated to τ5–Fe1.8Al7.2Si layer and τ5–Fe1.8Al7.2Si/Al interface. When interface was joined with 3–5 μm θ–Fe(Al,Si)3 + τ5–Fe1.8Al7.2Si, microcracks initiated at root of IMC layers and the interfacial bonding strength was 150 MPa. When interface was joined with 5–10 μm θ–Fe(Al,Si)3 + τ5–Fe1.8Al7.2Si, microcracks initiated and propagated along IMC layer. Lower interfacial bonding strength (106 MPa) was produced owing to large lattice mismatch between θ–Fe(Al,Si)3 and τ5–Fe1.8Al7.2Si, microdefects and higher residual stress. When interface was joined with 10 μm η–Fe2(Al,Si)5 + θ–Fe(Al,Si)3 + τ5–Fe1.8Al7.2Si, microcracks initiated and propagated along η–Fe2(Al,Si)5 layer or steel/η–Fe2(Al,Si)5 interface. Lowest bonding strength (64 MPa) was obtained resulted from pre–generated microcracks in η–Fe2(Al,Si)5 layer, largest residual stress, crystal defects and abnormal aggregation of Si. |
| نوع الوثيقة: |
article |
| وصف الملف: |
electronic resource |
| اللغة: |
English |
| تدمد: |
0264-1275 |
| Relation: |
http://www.sciencedirect.com/science/article/pii/S026412752200942X; https://doaj.org/toc/0264-1275 |
| DOI: |
10.1016/j.matdes.2022.111320 |
| URL الوصول: |
https://doaj.org/article/4725b5391dd2432bae612568b1217eb2 |
| رقم الانضمام: |
edsdoj.4725b5391dd2432bae612568b1217eb2 |
| قاعدة البيانات: |
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