Mg-10Y-4Gd-1.5Zn-0.4Zr合金的摩擦磨损行为（英文）

发布时间：2018-03-22 20:38

本文选题：Mg-Y-Gd-Zn-Zr合金　切入点：滑动摩擦　出处：《Transactions of Nonferrous Metals Society of China》2016年02期 　论文类型：期刊论文

【摘要】：采用球平面滑动摩擦试验机研究Mg-10Y-4Gd-1.5Zn-0.4Zr合金的摩擦磨损行为,对磨副选用AISI 52100型轴承钢球。研究在摩擦距离(400 m)不变的条件下,载荷(3~25 N)、摩擦速度(0.03~0.3 m/s)及摩擦温度(25~200°C)对磨损率的影响。通过SEM和EDS分析合金试样的磨损表面和磨屑形貌,并在相同的摩擦磨损条件下,选用一种过共晶Al-Si合金进行对比性的摩擦磨损实验。结果表明:铸态和T6态Mg-10Y-4Gd-1.5Zn-0.4Zr合金的磨损率低于T6态过共晶AC9B铝合金的磨损率。T6态Mg-10Y-4Gd-1.5Zn-0.4Zr合金的主要磨损机制是粘着磨损,高载荷(10~25 N)条件下趋于粘着磨损和塑性变形混合磨损机制;高摩擦速度(0.12~0.3 m/s)条件下趋于粘着磨损和塑性变形,并伴有剥层磨损和氧化磨损;高温(100~200°C)条件下趋于氧化磨损和粘着磨损混合磨损机制。Mg-10Y-4Gd-1.5Zn-0.4Zr合金中Mg_(12)Y_1Zn_1相的数量及稳定性直接影响合金的磨损率。
[Abstract]:The friction and wear behavior of Mg-10Y-4Gd-1.5Zn-0.4Zr alloy was studied by using a ball plane sliding friction tester, and AISI 52100 bearing steel ball was selected for the wear pair. The effects of load and friction velocity of 0.03 ~ 0. 3 m / s and friction temperature of 25 ~ 200 掳C) on the wear rate were studied. The wear surface and debris morphology of the alloy samples were analyzed by SEM and EDS, and under the same friction and wear conditions, the wear surface and wear debris morphology of the alloy samples were analyzed by SEM and EDS. A kind of hypereutectic Al-Si alloy was selected for comparative friction and wear experiments. The results show that the wear rate of as-cast and T6 Mg-10Y-4Gd-1.5Zn-0.4Zr alloys is lower than that of T6 hypereutectic AC9B alloy. The main wear mechanism of T6 Mg-10Y-4Gd-1.5Zn-0.4Zr alloy is adhesive wear. It tends to be adhesive wear and plastic deformation wear mechanism under high load (1025 N) and high friction velocity (0.120.3m / s), and it tends to adhesive wear and plastic deformation, accompanied by delamination wear and oxidation wear. The amount and stability of Mg_(12)Y_1Zn_1 phase in Mg-10Y-4Gd-1.5Zn-0.4Zr alloy have a direct effect on the wear rate of the alloy.
【作者单位】：哈尔滨理工大学材料科学与工程学院;上海交通大学轻合金精密成型国家工程研究中心;哈尔滨工程大学材料科学与化学工程学院;
【基金】：Project(51404082)supported by the National Natural Science Foundation of China Project(E201442)supported by the Natural Science Foundation of Heilongjiang Province,China Project(12531116)supported by the Foundation of Educational Committee of Heilongjiang Province,China Project(2013RFQXJ137)supported by the Harbin Special Funds for Creative Talents in Science and Technology,China Project(201510)supported by Science Funds for the Young Innovative Talents of HUST,China
【分类号】：TG146.22

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