Friction stir welding of pure magnesium and polypropylene in a lap-joint configuration: Microstructure and mechanical properties
来源期刊：International Journal of Minerals Metallurgy and Materials2019年第6期
论文作者：Amirhossein Moghanian Moslem Paidar Seyyed Salman Seyedafghahi Olatunji Oladimeji Ojo
文章页码：766 - 774
摘 要：A hybrid joint with a satisfactory mixture of pure magnesium and polypropylene（PP） was achieved via friction stir joining（FSW）in a lap-joint configuration. The tool rotational and travel speeds used in this work were 500–700 r/min and 50–100 mm/min, respectively.The mechanical properties and microstructural analysis of the resultant hybrid Mg/PP joint were examined. The results show that the maximum tensile shear strength（22.5 MPa） of the joint was attained at 700 r/min and 75 mm/min due to the optimum percentage fraction of mechanical interlocking（48%） and the presence of magnesium oxide. The interfacial joint center exhibits the maximum microhardness values because of the presence of refined and intertwined Mg fragments and density dislocations in the matrix of the PP. The joint failed via two different modes: interfacial line and weld zone fractures, respectively.
Amirhossein Moghanian1，Moslem Paidar2，Seyyed Salman Seyedafghahi3，Olatunji Oladimeji Ojo4
1. Department of Materials Engineering, Imam Khomeini International University2. Department of Material Engineering, South Tehran Branch, Islamic Azad University3. Department of Engineering, Faculty of Materials Science and Engineering, Imam Hossein University4. Department of Industrial and Production Engineering, Federal University of Technology Akure
摘 要：A hybrid joint with a satisfactory mixture of pure magnesium and polypropylene（PP） was achieved via friction stir joining（FSW）in a lap-joint configuration. The tool rotational and travel speeds used in this work were 500–700 r/min and 50–100 mm/min, respectively.The mechanical properties and microstructural analysis of the resultant hybrid Mg/PP joint were examined. The results show that the maximum tensile shear strength（22.5 MPa） of the joint was attained at 700 r/min and 75 mm/min due to the optimum percentage fraction of mechanical interlocking（48%） and the presence of magnesium oxide. The interfacial joint center exhibits the maximum microhardness values because of the presence of refined and intertwined Mg fragments and density dislocations in the matrix of the PP. The joint failed via two different modes: interfacial line and weld zone fractures, respectively.
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