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Title

420不銹鋼覆層之磨耗研究

The Wear of 420 Stainless Steel Remelting Layers

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[[abstract]]本研究之目的在於利用火燄噴覆技術,噴覆打底層(Ni粉、Ni-Cr粉),再噴覆420不銹鋼於S45C基材上,然後搭配氬銲與雷射後熔處理,以獲得品質極佳之後熔層,最後再進行乾砂式磨耗試驗以評估覆層的耐磨耗性,以決定出此製程之最佳參數。 實驗結果顯示:在氬銲後熔方面,銲接電流為80A,起弧電壓14V,走速1.25cm/min,氬氣流量為16~20L/min,可獲得良好的後熔表面;雷射後熔製程方面,固定雷射功率1600W,走速100mm/min,可成功地完成雷射後熔。 由金相分析比較中可以發現兩種不同後熔方式所得到的結構有所差異,氬銲後熔在覆層的晶粒為粗大的柱狀晶,熱影響區中包含了粗晶區與細晶區;雷射後熔在覆層與熱影響區中為細微的柱狀晶、樹狀晶與針狀組織。 在抗磨耗性方面,氬銲後熔Ni-Cr打底層之重量損失量最少,其次為雷射後熔Ni打底層的試片,損失最多為氬銲後熔的Ni打底層。

[[abstract]]Abstract The main purpose of this study is used flame spraying technology, to clad 420 stainless steel layer on S45C substrate. Mean while Ni or Ni-Cr powder was chosen as bond coat. Then the green layers were post remelted by TIG or laser method. To obtain the high quality layers, last to proceed dry sand abrasion test, to estimate the wear-resisting of remelted layer, to decide the best parameters in these methods. The results were revealed in this study:Remelting by TIG method, with welding current 80A, moving speed 12.5mm/min, and shielding gas 16~20L/min, can obtain fine surface. Remelting by laser method, working power 1600W, moving speed 100mm/min, could successfully achieve remelting process. From the microstructure analysis, the different microstructures were detected by two different remelting methods. Remelting by TIG method, dendrites were formed in thecoating, the heat-affected zone(HAZ) contain coarse grain zone and fine grain zone ; Remelting by laser method, fine column grain and dendrites and needle structure was observed. The weight loss of wear-resisting test, remelting by TIG method, Ni-Cr bond coat has least, the next for remelting by laser method, Ni bond coat, the weight loss has miximun that remelting by TIG method, Ni bond coat. Keywords: wear、laser remelting、TIG remelting、flame spraying

[[note]]參考文獻 【1】 王文樑 , 蘇子可 , 吳隆佃 , 董中能 , 420不鏽鋼粉末在鋼鐵上之火燄及電 弧噴銲技術研究, 計畫編號:MIDC-048-T401(79), 金屬工業研究發展中心, 7月, 1990. 【2】Z.N Farhat,, Y. Ding, A.T. Alpas, D.O. Northwood, “ Processing and testing of new and advanced materials for wear resistant surface coatings”, Journal of Materials Processing Technology, v63, n1-3, p 859-864, 1997. 【3】H.Wang, W.Xia, Y. Jin, “ Study on abrasive resistance of Ni-based coatings with a WC hard phase”, Wear, 195, v1-2 , p 47-52, 1996. 【4】D.Z. Guo, F.L. Li, J.Y. Wang and J.S. Sun, “Effects of post-coating processing on structure and erosive wear characteristics of flame and plasma spray coatings”, Surface & Coatings Technology, 73, 1-2, p 73-78, 1995. 【5】L. Lin, K. Han, “Optimization of surface properties by flame spray coating and boriding” , Surface & Coatings Technology, v106, n 2-3, p100-105, 1998. 【6】B. Wielage, U. Hofmann, S. Steinhauser, G. Zimmermann, “Improving wear and corrosion resistance of thermal sprayed coatings”, Surface Engineering, v14, n2 p136-138, 1998. 【7】J. F. Lei, S.P. Wnuk, “Flame-sprayed resistance strain gage for high- temperature applications”, Journal of Thermal Spray Technology, v3, n3, p305- 309, 1994. 【8】M. Li, A. Kar, V. Desai and A. Khanna, “High-temperature oxidation resistance improvement of titanium using laser surface alloying”, Journal of Materials Science, v30, n20, p 5093-5098, 1995. 【9】1.E. C Rollason , T. Henry Turner and N.F. Budgen, Metal Spraying, Charles griffin & Company, Limited, London, Second Edition, 1939. 【10】H. Herbert, “Coatings and coating practices”, Advanced Materials & Processes, v137, n1, p 59-60, 1990. 【11】E. Groshart, “Thermal sprayed coatings”, Metal Finishing, v83, n12, p 49-55, 1985. 【12】金重勳, 機械材料, 復文書局, 台南市, 第三版, p251, 1996. 【13】I.G. Khabibullin, G. V. Zubareva, V. N. Ignat'ev, A. N. Kazakov and V. A. Kharchenko, “Phase composition, Hardness, and high-temperature oxidation resistance of dispersion-hardened nickel coatings”, Protection of Metals, v21, n5, p649-650, 1985. 【14】S. Dallaire, “Influence of temperature on the bonding mechanism of plasma- sprayed coatings”, Thin Solid Films, v95, n3, p 237-244, 1982. 【15】T.P. Gavrilenko,; Y. A. Nikolaev, E.S. Prokhorov, V.Y. Ul'yanitskii, “Mechanisms of coating formation with flame spraying”, Combustion, Explosion and Shock Waves, v26, n2, p 228-238, 1990. 【16】R.W. Smith, R. D. Fast, “Future of thermal spray technology”, Welding Journal v73, n7, p 43-50, 1994. 【17】Y.N. Liu, E. K. Asibu, “Experimental Study of Dual-Beam Laser welding of AISI4140”, Welding Journal, vol76, no.9, 1997. 【18】KG. Budinski, Surface engineering for wear resistance, Prentice-Hall, Inc, New Jersey, p15-21, 1988. 【19】H. Hosoda, S. Hanada, K. Inoue, T. Fukui, Y. Mishima and T. Suzuki, “Martensite transformation temperatures and mechanical properties of ternary NiTi alloys with offstoichiometric compositions”, Intermetallics, v6, n4, p 291-301, 1998. 【20】R. Colaco, R. Vilar, “Phase selection during solidification of AISI 420 and AISI 440C tool steels ”, Surface Engineering, v12, n4, p 319-325,1996. 【21】J. Zhao, “Continuous cooling transformations in steels”, Materials Science and Technology, v8, n11, p 997-1003, 1992 【22】C.H. Li, D. A. Porter, K. E. Easterling and D. J. Smith, “Lattice Resolution study of the Martensitic transformation of small iron particles in a copper matrix”, Acta Metallurgica, v33, n2, p 317-328, 1985 . 【23】P.E.A. Turchi, “Electronic structure and phase stability. Effect of a bain transformation on the thermodynamic properties of substitutional alloys”, Materials Science & Engineering A, v A127, n2, p145-153, 1990. 【24】H. Reed, A. Reza, Physical Metallurgy Principles, 3rd, p17-27. 【25】T. Tsuchiyama, S. Takaki, “Effect of partial solution treatment on martensitic transformation of 12%Cr steels’’, Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan, v82, n12, p1035-1040, 1996 . 【26】Y. Itoh, K. Nagata, T. Yanuki and T. Mori,“Transient Thermal Stresses and residual stresses of 13 Cr cast steels during welding”, Yosetsu Gakkai Ronbunshu/Quarterly Journal of the Japan Welding Society, v2, n2, p150-156, 1984. 【27】D. Kotecki,“Welding stainless steel”, Advanced Materials and Processes, v155, n5, p 41-44, 1999. 【28】A. J. Sturgeon “Thermal spray technology”, Materials World, v1, n6, p351- 354, 1993. 【29】T. Tsuchiyama,; S. Takaki, S. Nakamura, “Austenite grain size control by insoluble carbide in martensitic stainless steels”,Journal of the Iron and Steel Institute of Japan, n81, v2, p147-152, 1995. 【30】K.T. SCOTT, R. KINGSWELL, “Thermal Spraying, Advanced Surface Coating”, v5, n1, p217-243, 1990. 【31】呂傳盛,“以噴銲法改變表面性質及其應用(I), 銲接與切割, 第7卷, 第 2期, p51-58, 1997. 【32】高道鋼 ,“ 熔射基礎 ”, 銲接與切割, v2, n1, p26-45, 1991. 【33】李貴智, 崔興國, 孫允利,“熱噴銲在鍋爐模式水冷壁中的應用”, 銲接, , 11期, p29-31, 2000. 【34】陳永甡, 銲接學, 文京圖書有限公司, 台北市, 革新版, p139, 1993. 【35】I.G. Khabibullin, Z.G. Kulyabina,“Oxidation of composite nickel coatings in moist oxides of carbon”, Protection of Metals, v20, n1, p125-126, 1984. 【36】V.V. Sobolev, J.M. Guilemany, J. Nutting, J.R. Miquel,“Development of substrate-coating adhesion in thermal spraying”, International Materials Reviews, v42, n3, p117-136, 1997 . 【37】H.G. Scott,“Phase relationships in the zirconia-yttria system”, Journal of Materials Science, v10, n9, p1527-1535, 1975. 【38】B.C. Wu, E Chang, D Tu and S.L. Wang, “Microstructures, properties and failure analysis of (ZrO2-8wt.%Y2O3)/((Co, Ni)-Cr-Al-Y) thermal barrier coatings”, Materials Science & Engineering A, vA111, n1-2, p201-210, 1989. 【39】J.M. Guilemany, I.N. Llorca P.J. Szabo ,“Residual stress characterisation of grit blasted steel surfaces”, Surface Engineering, v12, n1, p77-79, 1996. 【40】S. Amada, T. Hirose and T. Senda, “Quantitative evaluation of residual grits under angled blasting”, Surface & Coatings Technology, v111, n1, p1-9, 1999. 【41】黃悟哲,“氬銲後熔處理在420不銹鋼火燄塗層之研究”, 義守大學碩 士論文, 2000. 【42】王志平, 董祖王玉, 李麗, 韓松,“熱噴塗塗層殘餘應力的測試與分析”, 銲 接學報, v20, n4, p278-284, 1999. 【43】M. Villat,“Functionally effective coatings using plasma spraying”, Sulzer, Technical Review, v68, n3, p41-45, 1986. 【44】C.C. Berndt, C.K. Lin,“Measurement of adhesion for thermally sprayed materials”, Journal of Adhesion Science and Technology, v7, n12, p1235-1264, 1993. 【45】Y.A. Kharlamov, “Prediction of powder coating porosity”, Soviet Powder Metallurgy and Metal Ceramics, v29, n12, p973-977, 1991. 【46】P. Leisner, M.E. Benzon,“ Porosity measurements on coatings”, Transactions of the Institute of Metal Finishing, v75, n2, p88-92, 1997 . 【47】R. A. Miller, C. E. Lowell,“Failure mechanisms of thermal barrier coating exposed to elevated temperature”, Thin Solid Films, v95, n3, p265-273, 1982. 【48】I. Iordanova, K.S. Forcey,“Texture and residual stresses in thermally sprayed coatings”, Surface & Coatings Technology, v91, n3, p174-182, 1997. 【49】C.H. Amon, K.S. Schmaltz, R. Merz and F.B. Prinz,“Numerical and experimental investigation of interface bonding via substrate remelting of a impinging molten metal droplet”, Journal of Heat Transfer, v118, n1, p164-172, 1996. 【50】R. Brosilow,“What distributor salespeople should know about pulsed TIG welding”, Welding Distributor, v30, n2, p108-109, 1986. 【51】R.W. Niles, C.E. Jackson,“ Weld thermal efficiency of the GTAW process”, Welding Journal (Miami, Fla), v54, n1, p25s-32s, 1975. 【52】M.E. Wells, W.E. Lukens,“effect of forced gas cooling on GTA weld pools”, Welding Journal , v65, n12, p 314s-320s, 1986. 【53】A Gasser, D. Hoffmann, F. Jansen, E.W. Kreutz, E. Lugscheider and K. Wissenbach,“Remelting of surface coatings on steel by CO2 laser radiation”, Surface & Coatings Technology, v45, n1-3, p409-416, 1991. 【54】R. Johnson,“Lasers in the nuclear industry”, Laser Weld, Cutting and Surf. Treat., p43-47, 1984. 【55】敖仲寧, 李遠明,“雷射硬面處理技術”,銲接與切割, 第3卷, 第5期, p55- 66, 1993. 【56】B.H. Kear, E.M. Breinan and L.E. Greenwald, “Laser glazing em dash a new process for production control of rapidly chilled mettalurgical microstructures”, Metals Technology, v6, n4, p121-129 Apr 1979 【57】D.G. Anderson,“What designers should know about laser welding and cutting”, Mechanical Engineering, v100, n6, p 44-49, 1978. 【58】A.G. Attkins,“Toughness in wear and grinding”, Physics of Metals and Metallography, 1979 Univ of Melbourne, p12-14, 1979. 【59】H. Karl, G. Zum,“Microstructure and wear of materiials”, Elsevier Science Publiishers B.V. ,New York, p73-246, 1987. 【60】A. A. Torrance, “New approach to the mechanics of abrasion”, Wear, v67, n2, p233-257, 1981. 【61】J.F. Archard, R.A. Rowntree,“Temperature of rubbing bodies: Part 2. The distribution of temperatures”, Wear, v128, n1, p1-17, 1988..