Kurz Gerrit, Ganne Ketan, Nienaber Maria, Bohlen Jan
Institute of Material and Process Design, Helmholtz-Zentrum Hereon GmbH, Max-Planck-Straße 1, 21502 Geesthacht, Germany.
Materials (Basel). 2023 Jun 7;16(12):4227. doi: 10.3390/ma16124227.
The processability during massive deformation of magnesium-wrought products is hampered by the low formability of magnesium alloys. The research results of recent years demonstrate that rare earth elements as alloying elements improve the properties of magnesium sheets, such as formability, strength and corrosion resistance. The substitution of rare earth elements by Ca in Mg-Zn-based alloys results in a similar texture evolution and mechanical behaviour as RE-containing alloys. This work is an approach to understanding the influence of Mn as an alloying element to increase the strength of a Mg-Zn-Ca alloy. For this aim, a Mg-Zn-Mn-Ca alloy is used to investigate how Mn affects the process parameters during rolling and the subsequent heat treatment. The microstructure, texture and mechanical properties of rolled sheets and heat treatment at different temperatures are compared. The outcome of casting and the thermo-mechanical treatment are used to discuss how to adapt the mechanical properties of magnesium alloy ZMX210. The alloy ZMX210 behaves very similarly to the ternary Mg-Zn-Ca alloys. The influence of the process parameter rolling temperature on the properties of the ZMX210 sheets was investigated. The rolling experiments show that the ZMX210 alloy has a relatively narrow process window.
镁加工产品在大量变形过程中的加工性能受到镁合金低成形性的阻碍。近年来的研究结果表明，稀土元素作为合金元素可改善镁板的性能，如成形性、强度和耐腐蚀性。在Mg-Zn基合金中用Ca替代稀土元素会导致与含稀土合金相似的织构演变和力学行为。这项工作旨在了解Mn作为合金元素对提高Mg-Zn-Ca合金强度的影响。为此，使用Mg-Zn-Mn-Ca合金来研究Mn如何影响轧制过程中的工艺参数以及随后的热处理。比较了不同温度下轧制板材的微观结构、织构和力学性能以及热处理情况。利用铸造和热机械处理的结果来讨论如何调整镁合金ZMX210的力学性能。合金ZMX210的行为与三元Mg-Zn-Ca合金非常相似。研究了工艺参数轧制温度对ZMX210板材性能的影响。轧制实验表明，ZMX210合金的工艺窗口相对较窄。
