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熱擠壓對攪拌鑄造Al—Si—Pb軸承合金磨損行為的影響
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TG146.21

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國家教委博士點基金資助項目(1999018513)


Effect of Hot Extrusion on the Wear Behavior of Stircast Al-Si-Pb Bearing Alloys
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    摘要:

    研究了干摩擦條件下鑄態(tài)與熱擠壓態(tài)Al-Si-Pb軸承合金的磨損行為。研究結(jié)果表明：熱擠壓能有效改善鑄態(tài)合金的組織，提高機(jī)械性能，顯著降低氣孔率。這些有利因素極大地提高擠壓態(tài)Al-Si-Pb合金的耐磨性。光學(xué)觀察與X射線光電子能譜分析（XPS）表明：含鉛量超過15％的Al-Si-Pb合金在中等載荷下表現(xiàn)出幾乎恒定的磨損率與較好的抗咬合性，其原因是因為在磨損過程中形成一層幾乎覆蓋整個麻醉損面的潤滑膜，該膜是由含Al,Fe,Si,O,Pb等化合物混合組成。

    Abstract:

    The wear behavior of as cast and hot ex truded Al-Si-Pb alloys was investig ated under dry condition.The results show that the microstructure and mechanical prop erties can be greatly improved and porosity can be decreased significant ly by hot extrusion.These factors increase wear resistance of hot extr uded Al-Si-Pb obviously.Optical ob servation and X-ray photoelectron s pectroscopy(XPS)analysis reveal that the almost constant wear rate at mediate load level and better resistance to seizure for Al-Si-Pb alloys with more than 15%lead are due to a film of lubricant covered almost entire worn surface in the wear.This film is a mixture containing Al,Fe,S i,O and Pb.

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陸有 安健 等.熱擠壓對攪拌鑄造Al—Si—Pb軸承合金磨損行為的影響[J].稀有金屬材料與工程,2002,(6):468~471.[Lu You, An Jian, Liu Yongbing, Xu Dewe i. Effect of Hot Extrusion on the Wear Behavior of Stircast Al-Si-Pb Bearing Alloys[J]. Rare Metal Materials and Engineering,2002,(6):468~471.]
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  • 最后修改日期:2001-09-10
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