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研究生:楊竣揮
研究生(外文):Chun-Hui Yang
論文名稱:Inconel600銲接性研究
論文名稱(外文):On the Weldability of Inconel 600 Alloy
指導教授:敖仲寧敖仲寧引用關係
指導教授(外文):Jong-Ning Aoh
學位類別:碩士
校院名稱:國立中正大學
系所名稱:機械系
學門:工程學門
學類:機械工程學類
論文種類:學術論文
論文出版年:2001
畢業學年度:89
語文別:中文
論文頁數:137
中文關鍵詞:Inconel 600銲接性可調應變試驗熱延性熱裂縫
外文關鍵詞:Inconel 600 alloyWeldabilityVarestraint testHot ductility
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Inconel 600為一固溶型鎳基合金,常見應用於火力發電廠的蒸汽管路,今發現經長期使用後,容易沿銲道破裂,顯示銲接過程可能有問題,因此特針對其銲接性做一研究。研究方法以熱延性試驗、可調應變試驗(Varestraint)為主並配合手銲與自動銲實際施銲。手銲結果顯示,Inco82銲條的機械性質較Inco62銲條為佳,高電流容易導致銲道中晶粒粗化,影響銲道品質,同時若熱輸入量過大容易在晶界上形成析出物的聚集。熱延性實驗結果顯示,在高熱輸入量(12kJ/cm)的條件下Inconel 600在延性的恢復上較慢,熱裂敏感區與脆性溫度區也較大,同時強度亦較差。可調應變試驗結果顯示高電流、高熱輸入量容易使熱裂縫延伸至熱影響區中,影響銲道品質。同時在同一熱輸入量下高電流者熱裂情形較嚴重,顯示電流的大小是關鍵的影響因素。

Inconel 600 is a solid-solution strengthened nickel-based alloy. It is applied extensively in the steam piping system in the power plant. Fracture or cracks are often observed in the weldments of Inconel 600. Failure may arise from the inadequate welding process which results in earlier damages in the weldment as well as in the heat affected zone.
In this work, weldability of Inconel 600 was studied by using Varestraint Test and by conducting manual and automatic welding on Inconel 600 with different filler metals and welding process parameters.
The result indicated that the Inco 82 weld metal possessed better mechanical properties than the Inco 62 weld metal. Higher current may result in grain coarsening in the weld metal and in the HAZ. Too high heat input also results in migration of precipitates on the grain boundaries. The results of hot-ductility test revealed that higher heat input (12KJ/cm) resulted in a delay in ductility recovery during cooling, a larger crack susceptible region and brittle temperature range. Varestraint test results showed that hot cracks in the fusion zone often propagated into HAZ at higher heat input. The quality of the welding is therefore deteriorate. Higher crack susceptibility was observed at higher welding current if heat input remained at the same level.
Suggestions of GTAW welding procedure for Inconel 600 have been made according to the results obtained from the Varestraint test and the other welding evaluations.

一、前言1
二、文獻回顧2
2.1鎳基合金簡介 2
2.2鎳基合金的銲接性4
2.2.1鎳基合金適用銲法4
2.2.2鎳基合金銲接注意事項6
2.2.3成分對鎳基合金銲接的影響7
2.2.4鎳基合金銲接常見的問題9
2.3 Inconel 600合金與其銲接性10
2.3.1成分、組織與特性10
2.3.2 Inconel 600實際應用上之問題 11
2.3.3 Inconel 600相關的文獻回顧 12
2.4熱延性試驗相關文獻與原理15
2.5可調應變式銲接性試驗相關文獻17
2.6文獻歸納19
三、研究動機20
四、實驗方法21
4.1實驗材料21
4.2實驗理念與流程22
4.3實驗設備24
4.3.1電解拋光機24
4.3.2光學顯微鏡24
4.3.3 MTS拉伸試驗機24
4.3.4銲接夾治具25
4.3.5 GTAW自動銲設備26
4.3.6可調應變式(Varestraint)銲接性試驗機 26
4.3.7 Gleeble 1500試驗機 28
4.4實驗方法與步驟29
4.4.1銲接實驗29
4.4.2銲後實驗31
4.4.3 銲接性實驗32
第五章 實驗結果與討論 35
5.1銲接實驗35
5.1.1手銲實驗-Inco62銲條 35
5.1.2手銲實驗-Inco82銲條36
5.1.3自動銲實驗36
5.2機械性質試驗44
5.2.1銲件硬度分佈44
5.2.2使用Inco62銲條之手銲銲件拉伸試驗結果46
5.2.3使用Inco82銲條之手銲銲件拉伸試驗結果48
5.2.4使用Inco82銲條之自動銲銲件拉伸試驗結果49
5.2.5使用Inco82銲條之自動銲銲件高溫拉伸試驗結果51
5.2.6拉伸試片結果分析53
5.3銲件金相組織54
5.4熱延性實驗73
5.4.1示差熱分析實驗73
5.4.2熱延性實驗75
5.4.3 電子顯微鏡(SEM)斷面觀察 84
5.5可調應變試驗96
5.5.1點可調應變試驗96
5.5.2 縱向可調應變試驗100
5.5.3相同熱輸入量(6.24kJ/cm)之縱向可調應變試驗分析比較108
5.5.4裂縫的型態111
5.5.5 縱向可調應變試驗之EDS分析125
5.5.6 可調應變試驗實驗結論127
5.6銲接程序建議128
六結論131
七參考文獻132
八附錄136

1.Earl W. Ross and Chester T. Sims, Superalloys II, John Wiley & Sons, Inc., Chapter4, New York,1987
2.D. F. Paulonis, J.M. Oblak and D. S. Duvall, “Precipitation In Nickel-Base Alloy 718”, Transactions of the ASM, v62, 1969, pp.611- 622
3.W. L. Mankins and S. Lamb, Chapter “Nickel and Nickel Alloys”. ASM Metals Handbook, vol.2, p.430, ASM International, 1992
4.William R. Oates, Welding Handbook, 8th ed. Vol.3, Chapter4, AWS 1996
5.Welding Handbook, Section 4, 4th Ed., Metals and Their Weldability, Chapter67, Nickel and High Nickel Alloys
6.S. D. Kaiser, “Welding High-Nickel Alloys:Different but Not Difficult”, Welding Journal, October 1988, pp.55-577
7.ASM handbook v.3: alloy phase diagrams, ASM International, 1992
8.M. Prager and C. S. Shira, Weld. Res. Couns. Bull., p128,1968
9.陳春豐, 余俊旺, 林國璋, “中三機鍋爐再熱器破管原因追蹤排除”, 發電通訊340期, pp.23-29, 1999
10.W. F. Savage, E. F. Nippes and G. M. Goodwin, “Effect of Minor
Elements on Hot-Cracking Tendencies of Inconel 600”, Welding Journal, August 1977, pp.245s-253s
11.S. S. Glickstein, E. Friedman and W. Yeniscavich,
“Investigation of Alloy 600 Welding Parameters”, Welding Journal, April 1975, pp.113s-122s
12.B. Weiss, G. E. Grotke and R. Stickler, “Physical Metallurgy of
Hot Ductility Testing”, Welding Journal, October 1970, pp.471s-487s
13.P. L. Andreson, “Observation and Prediction of the Effects of Water Chemistry and Mechanics on Environmentally Assisted Cracking of Inconels 182 Weld Metal 600”, Corrosion Science, June 1987, p376-384
14.A McMinn and R. A. Page, “Stress Corrosion Cracking of Inconel Alloys and Weldments in High-Temperature — The Effect of Sulfuric Acid Addition”, Corrosion Science, April 1988, p239-247
15.C. D. Lundin, A. C. Lingenfelter, G. E. Groke, G. G. Lessmann, S. J. Matthews, “The Varestraint Test”, Welding Research Council Bulletin, August 1982, pp.1-19
16.H. W. Kerr, and M. Katoh, “Investigation of Heat-Affected Zone Cracking of GMA Welds of Al-Mg-Si Alloy Using the Varestraint Test”, Welding Journal, September 1987,pp.251s-259s
17.W. F. Savage and C. D. Lundin, “The Varestraint Test”, Welding Journal, October 1965, pp.433s-442s
18. R. G. Thompson, M. L. Callaghan, and A. C. Nunes, “Microcrack Formation and Fatigue Initiation in the Heat Affected Zone of Nickel Alloy Welds”, Advances in Welding Science and Technology - TWR '86: Proceedings of an International Conference on Trends in Welding Research. 1986 Gatlinburg, TN, USA, pp.495-502
19. R. G. Thompson, “Microfissuring of Alloy 718 in the Weld Heat-Affected Zone”, Journal of Metals, July 1988, pp.44-48
20.W. A. Baeslack III, W. P. Lata and S. L. West, “A Study of Heat-Affected Zone and Weld Metal Liquation Cracking in Alloy 903”, Welding Journal, April 1988, pp.77s-87s
21.W. A. Owczarski, D. S. Duvall and C. P. Sullivan, “A Model for Heat-Affected Zone Cracking in Nickel-Base Superalloys”, Welding Journal, April 1966, pp.145s-155s
22.D. S. Duvall, W. A. Owczarski, “Further Heat-Affected-Zone Studies in Heat-Resistant Nickel Alloys”, Welding Journal, September 1967, pp.423s-432s
23.Standard Methods for Mechanical Testing of Welds, AWS, 1997
24.林政德, “TMCP鋼高熱輸入量銲接熱影響區韌性及熱裂性研究”, 中正大學機械所碩士論文, 1996
25.林宗翰, “Ti-6Al-4V合金熱軋變形行為研究及顯微組織研究”, 中正大學機械所碩士論文, 1999
26.W. Yeniscavich, “A Correlation of Ni-Cr-Fe Alloy Weld Metal Fissuring with Hot Ductility Behavior”, Welding Journal, August 1966, pp.344s-356s
27.R. A. Patterson, R. B. Nemec and R. D. Reiswig, “Discontinuites Formed in Inconel GTA Welds”, Welding Journal, January 1987,pp.19s-25s
28.W. F. Savage, “Weldments, Physical Metallurgy and Failure Phenomena”, Proc. 5th Balten Landing Conf., August, 1978, p16
29.R. J. Bowers and E. F. Nippes, “Heat-Affected Zone Thermal Cycle in Inconel 718” ,Welding Journal, December, 1993, pp.523s-528s
30.N. L. Richards, X. Huang and M. C. Chaurvedi, “Heat Affected Zone Cracking in Cast Inconel 718”, Material Characterization 28:pp.179-187,1992
31.J. C. Lippold, “An Invesgation of Heat-Affected Zone Hot Cracking in Alloy 800”, Welding Journal, January, 1983, pp.1s-11s
32.R. G. Thompson and S. Genculu, “Microstructural Evolution in the HAZ of Inconel 718 and Correlation with the Hot Ductility Test”, Welding Journal, December, 1983, pp.337s-345s
33.王智德, “晶界碳化物對英高鎳600機械性質的影響”, 中山大學材料科學所, 碩士論文, 1991
34.Rosenthal D, “Mathematical Theory of Heat Distribution during Welding and Cutting”, Welding Journal, Vol.5, No.20, 1941,pp220s
35.莊瑛任、林義成, “鎳基合金的銲接裂縫”, 銲接與切割, 第九卷, 第四期, 民88年七月
36.Klaus Wilken and Horst Kleistner(FRG), “The classification and evaluation of hot cracking tests for weldments”, Welding in the world, Vol.28, No7/8, pp126-143, 1990
37.陳鴻賓、高道德, 金屬物理性能及試驗, pp.117-119
38.“Welding Metallurgy”, Sindo Kou. 1st ed. 1987, John Wiley&Sons,Inc.
39.J.F.Lcancast, “Metallurgy of Welding”, 5th ed., 1993, pp.148.

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