Dry sliding wear behavior of an extruded Mg–Dy–Zn alloy with long period stacking ordered phase
Dry sliding wear behavior of an extruded Mg–Dy–Zn alloy with long period stacking ordered phase
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长周期堆垛有序相挤压Mg-Dy-Zn合金的干滑动磨损行为
DOI：
10.1016/j.jma.2014.12.006
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发表时间：
2015-03
影响因子：
17.6
通讯作者：
Yuan Hao
中科院分区：
文献类型：
--
作者：
Xiaofeng Huang;Tijun Chen;Ying Ma;Yuan Hao
挤压态Mg-2Dy-0.5Zn合金的干滑动磨损行为（at.%）使用销盘配置进行研究。在20-760 N载荷范围内，以0.785 m/s的滑动速度测量摩擦系数和磨损率。用扫描电镜观察了合金的微观组织和磨损表面。测试了合金的室温和高温力学性能。随着载荷的增加，磨损机制主要有磨粒磨损、氧化磨损、分层磨损、热软化磨损和熔化磨损。通过接触表面温度分析，在给定的条件下，挤压态Mg-2Dy-0. 5 Zn合金的耐磨性优于铸态Mg-97 Zn-1 Y2合金。耐磨性的提高主要与晶粒尺寸的细化、长周期堆积有序相（LPSO）的良好热稳定性和优异的高温力学性能有关。
The dry sliding wear behavior of extruded Mg-2Dy-0.5Zn alloy (at.%) was investigated using a pin-on-disk configuration. The friction coefficient and wear rate were measured within a load range 20–760 N at a sliding velocity of 0.785 m/s. Microstructure and wear surface of alloy were examined using scanning electron microscopy. The mechanical properties of alloy were tested at room and elevated temperatures. Five wear mechanisms, namely abrasion, oxidation, delamination, thermal softening and melting dominated the whole wear behavior with increasing applied load. The extruded Mg-2Dy-0.5Zn alloy exhibited the better wear resistance as compared with as-cast Mg97Zn1Y2alloy under the given conditions through contact surface temperature analysis. The improved wear resistance was mainly related to fine grain size, good thermal stability of long period stacking order (LPSO) phase and excellent higher-temperature mechanical properties.
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影响因子：
13.1
作者：
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通讯作者：
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