对共晶Al-Si合金的耐磨、抗蚀性能进行研究.通过控制T6热处理参数来改变共晶Al-Si合金的组织,研究组织变化对合金的硬度、强度和拉伸性能的影响,以及对抗冲蚀和腐蚀性能的影响.采用Al-Si合金制备了一典型的农机零部件.并将Al-Si合金与常用的农机用铝材的性能进行比较.结果表明,合金的化学成分、显微组织、载荷、滑动距离和试验环境对材料的耐磨、抗冲蚀和腐蚀性能有很大的影响.铸态Al-Si合金的性能要明显优于传统的铝材,而且T6热处理能够改善Al-Si合金的性能.因此,可采用Al-Si合金来替代传统的铝材制造农机.
The abrasive and erosive-corrosive properties of eutectic Al-Si (LM6) alloy were studied.Microstructural features of the alloy were altered by controlling the T6 heat treatment parameter,and their influence on hardness,strength and elongation,and response of the samples in erosion-corrosion and abrasion conditions were studied.Characteristics of the Al-Si alloy samples were compared with those of Al conventionally used in agricultural machineries.Fabrication of a typical component using the Al-Si alloy was also explored in order to understand the feasibility of using the alloy system for the envisaged applications.The study suggests the response of the samples in different conditions to be greatly influenced by parameters like chemical composition,microstructural features and applied load,traversal distance and test environment.The performance of even the as cast Al-Si alloy is far superior to that of the conventional Al samples,while the T6 heat treated Al-Si alloy shows improved performance.Accordingly,the as-cast as well as T6 heat treated Al-Si alloy has potential for applications in agriculture as a replacement for the conventionally used Al.
参考文献
| [1] | VERMA S R.Seed-cum-fertilizer drills in India[A].Philippines:International Rice Research Institute,1986:121-135. |
| [2] | EDWARDS J D .The properties of pure aluminum[J].Transactions of the American Electrochemical Society,1925,47:287-300. |
| [3] | PORTER F C;HODDEN S E .Nodular pitting of aluminum alloys[J].Journal of Applied Chemistry,1953,3:385-409. |
| [4] | SRIVASTAVA N S L;DUBEY A K.Development and field evaluation of an animal drawn three row seed cum fertilizer drill cum two-row planter[A].Bhopal,India:Central Institute of Agricultural Engineering,1985:11-32. |
| [5] | BROWN R H;FLINK W L;HUNTER M S .Measurement of irreversible potential as a metallurgical tool[J].Transactions of the American Institute of Metallurgical Engineers,1941,143:115-123. |
| [6] | RIGNEY D A.Fundamentals of friction and wear[M].American Society for Metals,Metals Park,Ohio,1981:145-163,358-370. |
| [7] | SICHA W E.Aluminum base casting alloys[A].American Foundrymen's Society,1957:254-270. |
| [8] | LANCER M V.Metallurgy of aiuminum alloys[M].London:Chapman and Hall,1967:169-196. |
| [9] | MONDOLFO L F.Aluminium alloys:Structure and properties[M].London:Butterworths Ltd,1976:368. |
| [10] | TALBOT D E J;GRANGER D A .Secondary hydrogen porosity in aluminum alloys[J].Journal of the Institute of Metals,1964,92:290-297. |
| [11] | GUPTA A K;TIWARI S N;MALHOTRA S L .Volumetric contractions accompanying cooling and freezing in Al-Cu and Al-Si alloys[J].The British Fonndryman,1992,20:192-198. |
| [12] | POLMEAR I J.Light alloys:Metallurgy of light metals[M].London:Edward Arnold Publishers Ltd,1981:110-126. |
| [13] | BRANDES E A.Smithells metals reference book[M].London:Butterworths Ltd,1983:370-801. |
| [14] | DAHLE A K;NOGITA K;MCDONALD S D;ZINDEL J W HOGAN L M .Eutectic nucleation and growth in hypoeutectic Al-Si alloys at different strontium levels[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,2001,32:949-960. |
| [15] | CHRISTIAN J W.The theory of transformations in metals and alloys,part Ⅰ:Equilibrium and general kinetic theory[M].USA:Pergman Press,1981:169. |
| [16] | PRASAD B K;PATWARDHAN A K;YEGNESWARAN A H .Dry sliding wear characteristics of some zinc-aluminium alloys:A comparative study with a bearing bronze at a slow speed[J].Wear,1996,199:142151. |
| [17] | PRASAD B K .Dry sliding wear behaviour of zinc-based alloy:Influence of heat treatment and sliding speed and pressure[J].Materials Science and Technology,1997,13:928-936. |
| [18] | PRASAD B K;VENKAT K;MODI O P;YEGNESWARAN A H .Influence of the size and morphology of silicon particles on the physical,mechanical and wear properties of aluminium-silicon alloys[J].Journal of Materials Science Letters,1996,15:1773-1776. |
| [19] | PRASAD B K;JHA A K;MODI O P;DAS S,YEGNESWARAN A H .Abrasive wear characteristics of a Zn-37,2Al-2.5Cu-0,2Mg alloy dispersed with silicon carbide particles[J].Materials Transactions of the Japan Institute of Metals,1995,36:1048-1057. |
| [20] | PROTOPOPOFF E;MARCUS P.Handbook of metals corrosion fundamentals,testing and protection[M].Materials Park,Ohio:ASM,2003:8-12. |
| [21] | PRASAD B K;MODI O P .Slurry wear characteristics of zinc-based alloys:Effects of sand content of slurry,silicon addition to alloy system and traversal distance[J].Transactions of Nonferrous Metals Society of China,2009,19:277-286. |
| [22] | B. K. Prasad;O. P. Modi;A. H. Yegneswaran .Wear behaviour of zinc-based alloys as influenced by alloy composition, nature of the slurry and traversal distance[J].Wear: an International Journal on the Science and Technology of Friction, Lubrication and Wear,2008(11/12):990-1001. |
| [23] | MODI O P;SAXENA M;PRASAD B K;JHA A K DAS S YEGNESWARAN A H .The role of alloy matrix and dispersoid on the corrosion behaviour of cast aluminium alloy composites[J].Corrosion,1998,54:129-134. |
| [24] | SUMMERSAN J J;SPROWLS D O.Corrosion behaviour of Al alloys[A].Charlottesville,Virginia,1986:575-631. |
| [25] | MURRAY M J;MUTTON P J;WATTSON J D .Abrasive wear mechanisms in steels[J].Journal of Lubrication Technology,Transactions of the ASME,1982,104:9-16. |
| [26] | SUH N P .An overview of the delamination theory[J].Wear,1977,44:1-16. |
| [27] | B. K. Prasad .Abrasive wear characteristics of a zinc-based alloy and zinc-alloy/SiC composite[J].Wear: an International Journal on the Science and Technology of Friction, Lubrication and Wear,2002(3/4):250-263. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%