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| 引用本文： | 崔凤娥,杨平,边建华.��ϵ�������Ͻ�ĶϿ���֯����[J].物理测试,2007,25(1):14-0. |
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| 作者姓名： | 崔凤娥 杨平 边建华 |
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| 作者单位： | ???????????????????????????? 100083 |
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| 摘 要： | 文章利用中频感应炉炼制2种锰含量不同的硫化物自润滑合金，通过SEM观察断口并结合组织分析，研究合金中的硫化物形成以及合金的断裂行为。结果表明，硫化物处于韧性较差的珠光体中导致形成脆性解理断口，而硫化物处于韧性较好的铁素体中则形成韧性的韧窝断口。锰含量较低时硫化物以FeS为主，且为复相组织；含坚硬的V、Nb、Ti小颗粒化合物，易脱落；锰含量较高时硫化物以MnS为主。
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| 关 键 词： | ???? ??????? ??? ??? |
| 文章编号： | 1001-0777（2007）01-0014-03 |
| 收稿时间： | 1900-01-01; |
| 修稿时间： | 2006-05-15 |
Fracture Microstructure of Self-lubrication Alloys Containing Molybdenum Sulphide |
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| CUI Feng-e,YANG Ping,BIAN Jian-hua.Fracture Microstructure of Self-lubrication Alloys Containing Molybdenum Sulphide[J].Physics Examination and Testing,2007,25(1):14-0. |
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| Authors: | CUI Feng-e YANG Ping BIAN Jian-hua |
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| Affiliation: | School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083 China |
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| Abstract: | Self-lubrication alloys containing sulphide with different contents of manganese were prepared by a induction melting and casting process. The formation of sulfide in these alloys and their fracture were researched both with a scanning electron microscope and microstructure analysis. The results show that the fracture surface is in form of brittle cleavage fracture when sulfides locate in pearlite with a low toughness, and the fracture surface is in form of ductile dimple fracture when sulfides locate in ferrite with a high toughness. The sulfides mainly include FeS and present as a composite phase containing some small hard particles of V, Nb, Ti sulfides for the alloy with a lower content of manganese, whereas the sulfides mainly comprise MnS for the alloy with a high content of manganese. |
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| Keywords: | sulfide self-lubrication alloy fracture microstructure |
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