本文選題：Mg-Y-Gd-Zn-Zr合金　切入點(diǎn)：滑動(dòng)摩擦　出處：《Transactions of Nonferrous Metals Society of China》2016年02期 　論文類(lèi)型：期刊論文

【摘要】：采用球平面滑動(dòng)摩擦試驗(yàn)機(jī)研究Mg-10Y-4Gd-1.5Zn-0.4Zr合金的摩擦磨損行為,對(duì)磨副選用AISI 52100型軸承鋼球。研究在摩擦距離(400 m)不變的條件下,載荷(3~25 N)、摩擦速度(0.03~0.3 m/s)及摩擦溫度(25~200°C)對(duì)磨損率的影響。通過(guò)SEM和EDS分析合金試樣的磨損表面和磨屑形貌,并在相同的摩擦磨損條件下,選用一種過(guò)共晶Al-Si合金進(jìn)行對(duì)比性的摩擦磨損實(shí)驗(yàn)。結(jié)果表明:鑄態(tài)和T6態(tài)Mg-10Y-4Gd-1.5Zn-0.4Zr合金的磨損率低于T6態(tài)過(guò)共晶AC9B鋁合金的磨損率。T6態(tài)Mg-10Y-4Gd-1.5Zn-0.4Zr合金的主要磨損機(jī)制是粘著磨損,高載荷(10~25 N)條件下趨于粘著磨損和塑性變形混合磨損機(jī)制;高摩擦速度(0.12~0.3 m/s)條件下趨于粘著磨損和塑性變形,并伴有剝層磨損和氧化磨損;高溫(100~200°C)條件下趨于氧化磨損和粘著磨損混合磨損機(jī)制。Mg-10Y-4Gd-1.5Zn-0.4Zr合金中Mg_(12)Y_1Zn_1相的數(shù)量及穩(wěn)定性直接影響合金的磨損率。
[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 擄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.
【作者單位】： 哈爾濱理工大學(xué)材料科學(xué)與工程學(xué)院;上海交通大學(xué)輕合金精密成型國(guó)家工程研究中心;哈爾濱工程大學(xué)材料科學(xué)與化學(xué)工程學(xué)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
【分類(lèi)號(hào)】：TG146.22

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