摘要

本文是以FSW製程進行研究，觀察其製程對於鋁合金A5083-O材料之影響，期望從觀察其靜態試驗的結果裡，合理的解釋FSW銲接後所產生的疲勞裂縫進展行為特徵，並且應用FSW無縫接合的觀念，實際地進行修補疲勞裂縫的銲補工作。並以FEM模擬製程中的溫度場分布，並以實測溫度驗證FEM模擬銲接之結果，期望能應用於現場工作中。

研究進行的分為三個方向：

(1)進行靜態實驗，包括硬度量測、殘留應力量測以及溫度量測。而後進行銲道邊緣左右側以及從垂直銲道方向之疲勞裂縫成長試驗，分析靜態結果對於疲勞試驗結果之影響，了解因為FSW所造成銲道兩邊不同性質之影響。

(2)使用FEM模擬製程時溫度場的分布，預先了解銲接參數造成之溫度分布。

(3)使用FSW應用於修補因為疲勞所產生的裂縫，並觀察其修補前後之疲勞行為。

ABSTRACT

This text make with FSW Cheng carry on research , observe it make Cheng to aluminium alloy influence , A5083-O of material, expect that from observes it in the result of its static test , the behavior characteristic that tired cracks produced develop after rational explanation FSW is welded , use FSW is it sew idea of joint to have , mend the welding and mending working of the tired crack actually. And make Cheng Zhong's temperature field to distribute with FEM simulation , and verify the result welded in FEM simulation by surveying temperature, expect to be able to apply to the work on the spot.

The ones that study and carry on are divided into three directions:

(1)Carry on the static experiment , including the hardness amount examines, remains examining in conformity with strength examining and temperature amount. And then weld the side of about a line of edge and grow up and test from the vertical tired crack which weld a direction, analyse the static influence on the tired result of the test of result, understand because FSW causes and welds the influence of different nature of both sides .

(2)Use FEM simulation distribution of temperature field when making Cheng , understand in advance that welds the temperature profile that the parameter causes.

(3)Use FSW to be applied to mend in because the tired crack produced , and the tired behavior of observing it before and after mending.

參考文獻：
[1] W.M.Thomas,E.D.Nicholas,J.C.Needham,M.G.Murch, P. Temolesmith, J.C.Dawes,G.B.Application NO.9125978.8,Dec.1991.
[2] 符道,Application view of Friction Stir Welding on shipbuilding, 熱加工工藝,no.11,p48-49,2005.
[3] http://www.cfswt.com/aspnews/fswt/2004528143828.htm,2004-12-31.
[4] W.M. Thomas, E.D. Nicholas, J.C. Needham, “Friction Stir Welding for The Taansportation Industries”Materiala & Design, Vol.18,pp.269-273,1997.
[5] Joelj D. The Friction Stir Welding advantage [J]. Welding Journal, 80 (5):pp269-273,2001.
[6] Dawes C J, Thomas W M.Friction stir process welds Al alloys [J].Welding Journal, 1996, 75(3),pp41-45.
[6] Sanderson A,Punshon C S,Russell J D.Advanced welding processes for fusion reactor fabrication[J].Fusion Engineering and Design,2000,50(11):77-87
[7] R Johnson and P L Threadgill, Progress in friction stir welding of aluminium and steel for marine applications,Advanced Marine Materials: Technology and Applications. October 2003.
[8] 劉會杰,陳迎春,馮吉才.中國攪拌摩擦技術的研究[J]. 焊接,2004,(12), p.5.
[9] Kumagai M and Tanaka S: 'Properties of aluminium wide panels by friction stir welding'. Proc 1st International Friction Stir Welding Symposium, Thousand Oaks CA, USA, June 1999.
[10] Zhou C Z, Yang X Q, Luan G H. Fatique properties of FSW in Al 5083 alloy [J] , Scr Mater, 2005, 53,pp.1187.
[11] Hafley RA,DOmack MS,Wagner JA.Fatique crack growth rate behavior of AL-Li alloy 2195 plate and weldments.AeroMat’98,Tysons Corner,VA,18 June,1998.
[12] James M,Mahoney M,Waldron D.Residual stress measurements in FSW aluminum alloys. In:Proceedings of the First International Symposium on FSW,Rockwell International Science Center,June 1999.
[13] Bucci RJ.Effect of residuel stress on fatigue crack growth rate measurements.In:Fracture Mechanics:Thirteenth Conference.West Conshohocken,PA:American Society for testing and Materials;1981.p.28-47(ASTM STP 743)
[14] Link LR.Fatique crack growth of weldments.In:Mchenry HI,Potter JM,editors.Fatique and fracture testing of weldments. West Conshohocken,PA:American Society for testing and Materials;1990.p.16-33(ASTM STP 1058)
[15] Jata KV,Sankaran KK,Ruschau JJ.Metall Mater Trans 2000;31A(September):2181-92.
[16] Biallas G, Donne C, Mechanical properties and corrosion behaviour of FSW’s 2024 T3. In:1st International Symposium on FSW. June 1999, Thousand Oaks(CA).
[17] Bussu G, Irving PE, Fatique performance of FSW’s 2024-T351 al alloys, First International Symposium on FSW.14-16 June 1999, Thousand Oaks(CA).
[18] Aluminium Federation, The properties of Aluminium and its alloys,Alfed;1983.
[19] ASTM,” Standard Test Method for Determining Residual Stress by the Hole-Drilling Strain-Gage Method “, pp.715-720,1989.
[20] Chao Y J,Shu liu.Temperature,force,and power in FSW[J].Advanced materials and processes,2003,(5):44-45
[21] Frigaars O.A process model for friction stir welding of age hardening aluminum alloys[J].Metallurgical and Materials Transactions,2001,32A(5):1189-1190.
[22] Khandker M Z H,Khan J A,Reynolds A P.prediction of temperature distribution and thermal history during FSW : input torque based model[J].Science and Technology of welding and joining,2003,8(3):165-174.
[23] Song M,Kovacevic R.Thermal modeling of FSW in a moving coordinate system and its validation[J].International Journal of Machine Tools and Manufacture,2003,43(13):1319-1326.
[24] Song M,kovacevic R.Thermal modeling of FSW in a moving coordinate system and its validation[J],International fournal tools and manufacture,2003,43(6);605-615.
[25] Song M,kovacevicR.A.new heat transfer model for FSW [J].Technical paper society of Manufacturing Engineers.MS,London,nMS02-175,2000.
[26] Song M,Numerical and experimental study of the heat transfer process in FSW[J], Journal of Engineering,2003,217(1);73-85.
[27] Colegrove P.Three dimensional flow and thermal modeling of the FSW process[A]. Proceedings of the second International Symposium on FSW[C]. Stockholms. Sweden,2000.
[28] Thomas W M, 'Friction stir welding and related friction process characteristics'. Proceedings. INALCO, Cambridge, 16 April 1998.
[29] Thomas W M, Andrews R E, 'High performance tools for friction stir welding (FSW)', International Patent Application WO 99/52669.
[30] 胡永祥，” 利用低速鑽孔法對304L不鏽鋼銲接件殘留應力之檢測評估 “，成功大學機械工程研究所，碩士論文，1993.
[31] Timoshenko , S . P . and Goodier , J . N . ,” Theory of Elasticity “ , 3rd.Ed.McGraw-Hill Inc.,Taiwan,1986
[32] C. H. Lin , S. H. Her , H. K. Lin , “Stress Concentration Effect on the Growth Rate of Embedded Fatigue Crack of Welded Joints” , TEAM’98 Kanazaewa , Japan , 6-9 , July , (1998)
[33] Shin,C.S. and Hsu,S.H.”Fatigue Life Extension by an Artificially Induced Retardation Mechanism,” Engng. Fract. Mech., 43(4),pp.677-684(1992).
[34] 陳長有、許振聲、陳伯宜等編，”機械工程實驗(一)材料試驗”，全華科技圖書股份有限公司印行，p.5-19，1997。
[35] ASTM Handbook: Formerly Tenth Edition, Metal Handbook, Vol 2, Properties and Selection: Nonferrous Alloys and Specical-Puropose Materials,1993.