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稀土Ce對HMn64-8-5-1.5合金組織及耐磨性能的影響
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1.有研科技集團有限公司有色金屬材料制備加工國家重點實驗室;2.有研工程技術研究院有限公司;3.北京有色金屬研究總院;4.中鋁集團;5.上海理工大學

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Effect of rare earth Ce on microstructure and wear resistance of HMn64-8-5-1.5 alloy
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1.State Key Laboratory of Nonferrous Metals and Processes，General Research Institute for Nonferrous Metals (GRINM);2.GRIMAT Engineering Institute Co., Ltd;3.General Research Institute for Nonferrous Metals;4.Aluminum Corporation of China

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    摘要:

    本文系統(tǒng)地研究了稀土Ce對HMn64-8-5-1.5合金顯微組織及摩擦磨損性能的影響。研究表明,稀土Ce在熔煉過程中起到脫氧、脫硫、除氫和除雜的作用,可以凈化合金基體,使晶粒尺寸顯著細化。摩擦磨損實驗表明,稀土Ce能明顯改善材料的摩擦磨損性能,添加0.2wt%Ce時,較無Ce的合金磨損量減小了25%。添加0.2wt%Ce后,合金的主要磨損形式從嚴重的黏著磨損轉變?yōu)槟チＤp。結合兩種摩擦磨損模型對合金的磨損機理進行了深入分析,添加稀土Ce前后合金的磨損機制發(fā)生變化的主要原因是Ce的去除雜質、細化晶粒的作用,使合金本身的表面強度、極限變形值增大。

    Abstract:

    The effect of rare earth Ce on microstructure and friction and wear properties of HMn64-8-5-1.5 alloy was systematically studied. The results indicate that rare earth Ce plays the role of deoxidation, desulfurization, dehydrogenation and impurity removal during the smelting process, which can purify the alloy matrix and make the grain size remarkably refined. The friction and wear experiments show that the rare earth Ce can significantly improve the friction and wear properties of the material. When 0.2wt% Ce is added, the weight loss of the alloy is less than 25%. The wear mechanism of the alloy is analyzed by combining two kinds of friction and wear models. The major wear behavior of the alloy changes from adhesive wear to abrasive wear by adding 0.2 wt% Ce. The main reason for the change of wear mechanism of the alloy with and without the Ce addition is the effects of removing impurities and refining crystal grains by Ce, which increases the surface strength and ultimate deformation value of the alloy itself.

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陳少華,米緒軍,別立夫,黃國杰.稀土Ce對HMn64-8-5-1.5合金組織及耐磨性能的影響[J].稀有金屬材料與工程,2020,49(3):811~818.[Shaohua Chen, Xujun Mi, Lifu Bie, Guojie Huang. Effect of rare earth Ce on microstructure and wear resistance of HMn64-8-5-1.5 alloy[J]. Rare Metal Materials and Engineering,2020,49(3):811~818.]
DOI：10.12442/j. issn.1002-185X.20190788

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  • 收稿日期:2019-09-24
  • 最后修改日期:2019-12-09
  • 錄用日期:2019-12-11
  • 在線發(fā)布日期: 2020-04-08
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