Characterization of the AZ31/AW-6060 joint fabricated using compound casting with a Zn interlayer at relatively low temperature conditions

Bucki, Tomasz (author), Konieczny, Marek (author), Bolibruchová, Dana (author), Rzepa, Sylwia (author)

The work deals with the fabrication of a joint between AZ31 magnesium alloy and AW-6060 aluminium alloy with the use of a Zn interlayer. The Zn layer was produced on the surface of an AW-6060 alloy insert by diffusion bonding. The insert was then placed inside a steel mould and kept at room temperature. The joint was produced using compound casting by filling the mould with liquid AZ31 alloy, heated to 650 °C. The microstructure of the bonding zone formed between joined alloys was analysed using an optical microscope and a scanning electron microscope equipped with an energy dispersive X-ray spectroscope. The properties of the joint were examined using Vickers microhardness measurements and simple shear strength testing. As a result of the experiment, the 400 [micro]m thick bonding zone with a complex microstructure was formed between the alloys. The microstructural analysis showed that the bonding zone reveals a high concentration of Zn and Mg. The layers of a eutectoid (a MgZn phase + a solid solution of Al and Zn in Mg), a Mg5Al2Zn2 phase and a Mg(Al,Zn)2 phase with fine particles of other phases were observed there. The bonding zone was characterized by relatively high microhardness, which was related to the brittleness of the constituents. The shear strength of the examined joint was 19.6 +/- 2.5 MPa.

• Language: English
• Keywords: compound casting, magnesium alloys, aluminium alloys, zinc interlayer, microstructures, mechanical properties
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FS - Faculty of Mechanical Engineering
• Publication status: Published
• Publication version: Version of Record
• Year: 2021
• Number of pages: Str. 389-397
• Numbering: Vol. 67, no. 7/8
• PID: 20.500.12556/RUL-130973
• UDC: 621.74:669.721.5+669.715
• ISSN on article: 0039-2480
• DOI: 10.5545/sv-jme.2021.7262
• COBISS.SI-ID: 76913411
• Publication date in RUL: 20.09.2021

Record is a part of a journal

• Title: Strojniški vestnik
• Shortened title: Stroj. vestn.
• Publisher: Zveza strojnih inženirjev in tehnikov Slovenije [etc.], = Association of Mechanical Engineers and Technicians of Slovenia [etc.
• ISSN: 0039-2480
• COBISS.SI-ID: 762116

Secondary language

• Language: Slovenian
• Title: Karakterizacija spoja AZ31/AW-6060, izdelanega po postopku sestavljenega litja z vmesno plastjo Zn pri razmeroma nizkih temperaturah
• Keywords: sestavljeno litje, magnezijeve zlitine, aluminijeve zlitine, cinkova vmesna plast, mikrostrukture, mehanske lastnosti