304不銹鋼激光焊接接頭形貌與組織性能分析-(5278)

304不銹鋼激光焊接接頭形貌與組織性能分析-(5278)

ID:32990537

大?。?.06 MB

頁數(shù):73頁

時(shí)間:2019-02-18

304不銹鋼激光焊接接頭形貌與組織性能分析-(5278)_第1頁
304不銹鋼激光焊接接頭形貌與組織性能分析-(5278)_第2頁
304不銹鋼激光焊接接頭形貌與組織性能分析-(5278)_第3頁
304不銹鋼激光焊接接頭形貌與組織性能分析-(5278)_第4頁
304不銹鋼激光焊接接頭形貌與組織性能分析-(5278)_第5頁
資源描述:

《304不銹鋼激光焊接接頭形貌與組織性能分析-(5278)》由會員上傳分享,免費(fèi)在線閱讀,更多相關(guān)內(nèi)容在行業(yè)資料-天天文庫。

1、addition,thetensiletestofjointsweldedunderdifferentprocessingparameterswereconducted,andthetensilepropertieswererelatedtothemacro-morphologyandmicrostructureofjoints.Whenthejointobtainstheappropriatemacro-dimensionsandfinegrainsinthefusionzone,itgetsthebesttensilepropertiesandfractur

2、esinthebasemetalaftertensiletest.Themorphologyoffracturesurfacewasexaminedviaascanningelectronmicroscope.Itisvisiblethatlargequantityofdimplesisformedonthefracturesurfaces,revealingthattheweldedjointfailsinaductilemode.Finally,accordingtothefeatureofweldshapeoflaserwelding,acombinedh

3、eatsourcemodelofdoubleellipsoidbodyheatsourceandgausssurfaceheatsourcewasestablished.ThedynamicsimulationoftemperaturedistributionoflaserweldingwasrealizedbyusingFEsoftwareABAQUSandtheusersubroutinewhichisintheFORTRANlanguage.Fromtheaspectofmacro-morphology,theweldingpoolboundaryinsi

4、mulationisinaccordancewiththefusionboundaryinexperiment,whichverifythereliabilityofmodel.Fromtheaspectofmicrostructure,thetemperaturedistributioncanpredictthetemperaturegradientofliquidandthecoolingrateofweldcenter,andfurtherpredictthetendencyofsolidificationmodeandtherelativesizeofg

5、rainsqualitatively.Sotherelationbetweenthetemperaturedistributionandmicrostructureofweldisstudied.Keywords:Laserwelding;Microstructure;Mechanicalproperty;Temperaturedistribution;FiniteelementsimulationIII萬方數(shù)據(jù)目錄中文摘要......................................................................

6、.................................................IAbstract.......................................................................................................................II目錄.......................................................................................................

7、...................IV第1章緒論.................................................................................................................11.1研究背景.........................................................................................................11.2304不銹鋼的傳統(tǒng)焊接方法...............

8、............

當(dāng)前文檔最多預(yù)覽五頁,下載文檔查看全文

此文檔下載收益歸作者所有

當(dāng)前文檔最多預(yù)覽五頁,下載文檔查看全文
溫馨提示:
1. 部分包含數(shù)學(xué)公式或PPT動(dòng)畫的文件,查看預(yù)覽時(shí)可能會顯示錯(cuò)亂或異常,文件下載后無此問題,請放心下載。
2. 本文檔由用戶上傳,版權(quán)歸屬用戶,天天文庫負(fù)責(zé)整理代發(fā)布。如果您對本文檔版權(quán)有爭議請及時(shí)聯(lián)系客服。
3. 下載前請仔細(xì)閱讀文檔內(nèi)容,確認(rèn)文檔內(nèi)容符合您的需求后進(jìn)行下載,若出現(xiàn)內(nèi)容與標(biāo)題不符可向本站投訴處理。
4. 下載文檔時(shí)可能由于網(wǎng)絡(luò)波動(dòng)等原因無法下載或下載錯(cuò)誤,付費(fèi)完成后未能成功下載的用戶請聯(lián)系客服處理。