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1、Mar．2015HydromechatronicsEngineeringVo1．43No．6HydromechatronicsEngineeringhttp：／／jdy．qks．cqut．edu．caE-mail：jdygcyw@126．comExperimentofturningforcecharacteristicofbulkamorphousalloyMeng—yangQINr，Ya-junLIU，Lan—yingXU，Yong—shunLUO(1CogeofMechatronicEngineering。Guang
2、dongPolytechnicNormalUntity，Guangztwu510635，China)(School脅chanicalnndAut。motiveEngineering，SouthChinaUniversityofTechnology，Guangzhou510640，China)Abstract：Duetotheparticularnon．crystallinestructureofbulkamorphousalloy，themechanicalpropertiesofthisa110varenotthesa
3、measthoseoftraditionalmeta1．Inordertostudythecuttingforcecharacteristicofbulka’morphousalloy，Zr41Ti138CuI25Ni10oBe22Bulkamorphousalloywasmachinedbylatheandthecuttingforceslg’．5．2na1swerec011ected．Bvusingwaveletanalysis，theturningforcesignalsofthebulkamorphousallo
4、yweredisposedtotthecharacteristicsofsigna1．Theresultsofsignalanalysishasshownthatsignalenergydistributionofcut—tingforcetendstobeinalowfrequencybandwiththeincreaseofcuttingparameters，andthecuttingdeformationmechanismofbulkamorphousalloysisbrittlefractureatamicrol
5、eve1．Keywords：Bulkamorphousalloy，Brittlematerial，Waveletanalysis，Cuttingforcedoi：10．3969／j．issn．1001—3881．2015．06．020Documentcode：ACLCnumber：TG51terials．withlackoftheslidingplasticdeformation1Introductionmechanismsofcrystallinemetalalloysandwork·-hard-eningcharac
6、teristics．a(chǎn)ndsincetheoverallvolumehasIn1960，Americanscientist，Dewey，wasthefirstlittleplasticdeformation．brittlefractureOCCUlTedeas—persontodiscoverthatsomeofthepreciousmetalal—ilvunderoutside1oad『7—8]．Theyarematerialsloycouldbeturnedintoamorphousmetalsbyusingwhic
7、haredificulttobeenmachined，andeasytorapidcooling．Theseamorphousmetalswithsimilarcrackandhavesub．surfacedamage．therefore，itisu—characteristicsofcertainglass，ascomparedwiththesuallymachinedatroomtemperature[9一llJ．traditionalcrystallinealloy，havemanyexcellentper—Zr4
8、1Ti8Cu125Nil0oBe225alloy(Vitlalloy)isthe．2formancessuchashighhardness，high—intensity，representativematerialofbulkamorphousalloys，high．resistance，wearandcorrosi
