高壓水射流沖擊材料表面強(qiáng)化的研究.pdf

1、大連理工大學(xué)碩士學(xué)位論文高壓水射流沖擊材料表面強(qiáng)化的研究姓名：張大申請學(xué)位級別：碩士專業(yè)：材料加工工程指導(dǎo)教師：周文龍曾元松20061201張大：高壓水射流沖擊材料表面強(qiáng)化的研究InvestigationonSurfaceStrengtheningofHighPressureWaterjetPeeningAbstract：Asanewsurfacepeeningmetllod’highpressurewaterjetpeeningOwP

2、)wasusedtoimprovethefatiguelifeoftreatedcomponentsbychangingthesurfaceAlthoughthereWasjust45yearstothisday，becauseofthebettereffectsandlowercostandeasiertoCalTyoutrobotizationandcutting／peening／formingasakindofmultiplici

3、tytreatments，someresearcheshadbeenstartedoverseasAttheregionofair，ford“elopmgthefatiguestrengthandtheusinglifeofcomponents，shotpeeninghadbeenusedforsomeimportantcomponents。suchasairenginevane、undercarriageandaerofoilwain

4、scotSoifWJPcalltakeplaceoftheshotpeeningulteriorly，itwillbedwelopthefatiguelifeandthewholepropertiesofengineandplaneAtpresent，theresearchoftheWJPhasn’tbeenstartedinchina，soitneedtostartforthepotentialpredominanceofthetec

5、hnologyfortherewe聆thematureequipmentsInthispaper，thesubmergedwatedctWasadoptedtostrengthenthespecinlensurfaceof7075T651andTC4AndthattheruleandeffectofWJP’sparametersinfluencesthesurfacepropertiesoftestalloywereresearched

6、111cresultsdemonstratedthattherewereimportantinferencesbythethreeparameterssuchastime、distanceandpressurefortheabilitvofcavitationand也ef；ewasaflatinaeertainextentComparedwiththenonpeeningandshotpeening，thefatiguelifeofth

7、eWJPspecime璐Wasimprovedby22％、66％and82％、2％，respectively111ecompressives燈豁sofresiduallayerintroducedbyWYPWashigherthanthatintroducedbyshotpeening，sothefatiguelifeofthespecimenstreatedbyWJPincreasedmuchmoleBecauseofthesm紙pr