Ren Daxin, Ma Yanhua, Zheng Rencheng
School of Automotive Engineering, Dalian University of Technology, Dalian 116024, China.
Tianjin Key Laboratory of Equipment Design and Manufacturing Technology, Tianjin 300072, China.
Materials (Basel). 2022 Jul 6;15(14):4732. doi: 10.3390/ma15144732.
A new multilayer composite sheet consisting of Fe/Mg/Fe was fabricated from galvanized steels and Mg alloy sheets via roll cladding. The clad steel improved the Mg surface hardness from HV 65 to HV 132. Bonding occurred as the reduction ratios increased up to over 10%. Investigation of the microstructure of the Mg/steel interface revealed a 5 μm- to 10 μm-thick transition layer between Mg and each steel sheet, consisting of Zn and an intermetallic compound (0.97Mg-0.03Zn). Zinc coating from the galvanized steel sheet improved the metallurgical bonding between Mg and Fe by forming new intermetallic phases.
通过轧辊包覆工艺，由镀锌钢和镁合金板制备了一种新型的Fe/Mg/Fe多层复合板。复合钢将镁表面硬度从HV 65提高到了HV 132。随着压下率增加到超过10%，发生了结合。对镁/钢界面微观结构的研究表明，在镁与每块钢板之间存在一个5μm至10μm厚的过渡层，该过渡层由锌和一种金属间化合物（0.97Mg-0.03Zn）组成。镀锌钢板上的锌涂层通过形成新的金属间相改善了镁与铁之间的冶金结合。
