1. Cov khoom siv sim
Lub tensile xeem daim yog kuaj los ntawm cov khoom, thiab qhov loj yog txiav txim raws li GB/T 228. . Qhov ntev ntawm cov qauv yog 300mm. Peb qhov sib npaug sib npaug tau tsim, suav nrog TB-1, TB-2, thiab TB-3. Lub thickness ntawm steel puag txheej yog 10 hli, thiab lub thickness ntawm titanium txheej yog 2 hli. Qhov luaj li cas ntawm tus qauv yog qhia nyob rau hauv daim duab 2. Qhov txiav thiab tsim qauv yog qhia nyob rau hauv daim duab 3.
Kev faib tawm ntawm titanium txheej thiab qis-carbon steel txheej tuaj yeem pom meej meej los ntawm cov khoom siv lub koom haum daim duab duab ntawm ntu ntu ntawm cov phaj hauv daim duab 4.
Daim duab 2 Tsim daim duab ntawm qhov loj me
Daim duab 3 Kev txiav thiab tsim daim duab ntawm daim ntawv xeem Daim duab 4 Hla ntu Cov Khoom Siv Lub Koom Haum Daim Ntawv Qhia ntawm Daim Ntawv Xeem
TA2+Q235B tawg titanium steel phaj, nrog kev lag luam ntshiab titanium cladding
TA2, Lub thickness yog 2 hli, thiab lub hauv paus txheej yog ua los ntawm Q235B steel nrog ib tug tuab ntawm 11 hli. Table 1 qhia cov ntsuas kev ua tau zoo ntawm TA2 thiab Q235B.
Raws li GB/T 228. Qhov kev sim tensile tau ua nyob rau ntawm lub tshuab microcomputer servo hydraulic universal testing tshuab, thiab ib qho kev ntsuas kev qaug zog tau ua rau ntawm MTS810 qaug zog kuaj tshuab. Tsib qhov kev ntxhov siab tau raug xaiv ua ntu zus: 0.5rm, {{10}}.45rm, 0.4rm, 0.35rm, thiab 0.3rm. Cov theem kev ntxhov siab tau maj mam txo qis thaum lub sij hawm sim, nrog rau sine yoj zaus ntawm 30Hz, qhov kev ntxhov siab piv ntawm -1, thiab loading zaus ntawm 2 × 105 zaug. Lub microstructure ntawm lub interface ntawm titanium steel puas phaj tau soj ntsuam thiab soj ntsuam siv Zeiss Axiovert 200MAT metallographic microscope.
2. Kev sim txheej txheem
Thaum pib ntawm kev thauj khoom, raws li kev thauj khoom nce, cov qauv yog me ntsis elongated thiab hla ntu qhia pom tias shrinkage. Raws li cov load ntxiv, qhov deformation ntawm cov qauv nce. Thaum thauj mus rau qhov siab tshaj plaws tus nqi, cov qauv nthuav tawm caj dab thiab nws thiaj li tawg. Thaum lub sij hawm sim, muaj ob lub suab nrog cov qauv ntawm qhov pib ntawm kev thauj khoom mus rau qhov tsis ua haujlwm. Thawj yog qhov sib cais ntawm titanium steel interface, thiab qhov thib ob yog qhov tawg ntawm cov qauv. Nws tuaj yeem pom tias lub hauv paus thiab cladding ntawmtitanium steel composite phajtuaj yeem ua haujlwm ua ke thaum lub sijhawm ua haujlwm tensile. Cov ntaub ntawv ntsuas ntawm txhua qhov hnoos qeev tau pom nyob rau hauv Table 2. Nws yog ib qho tsim nyog yuav tsum nco ntsoov tias cov pob txha pob txha ntawm tag nrho cov qauv zoo sib xws, thiab muaj kev khoov deformation nrog kev nro, uas yog vim qhov kev tso tawm ntawm qhov seem ntawm cov phaj. Nyob rau tib lub sijhawm, kev tshuaj xyuas microscopic ntawm TA2+Q235B steel qhia tau hais tias lub microscopic tsos ntawm ob sab ntawm txheej zoo sib xws, qhia tias ob cov khoom hlau muaj kev sib txuas zoo ntawm kev sib txuas.
Thaum lub zog qis dua 8%, txoj kab nqes ntawm txoj kab nkhaus zoo li flatten
Yooj yim thiab pom tseeb yielding deformation. Lub caij no, raws li qhov sib piv ntawm qhov hnyav ntawm cov hlau nce, lub peev xwm deformation maj mam txo, uas yog vim qhov txo qis ntawm qhov sib npaug ntawm titanium hauv nro. Los ntawm kev ntsuas, nws tau pom tias qhov ntev ntawm cov qauv nce, thawj zaug hauv nruab nrab, thiab tom qab ntawd maj mam kis mus rau ob qho kawg. Cov txheej txheem ntawm lub hauv paus txheej thiab cov txheej txheem sib xyaw yog tib yam, qhia tau hais tias lawv tau txais kev sib koom ua ke deformation. Los ntawm kev ntsuas cov txiaj ntsig, nws tseem tuaj yeem pom tias qhov deformation nyob rau hauv nruab nrab ntawm cov qauv yog qhov loj tshaj plaws, thiab qhov deformation ntawm ntu ntu yog sib xws, qhia txog kev sib koom ua ke deformation ntawm lub hauv paus txheej thiab cov txheej txheem sib xyaw. Thaum cov khoom siv tau ncab thiab tawg, nws txav raws lub dav hlau dislocation, thiab cov pob zeb precipitate tshwm sim tsis tu ncua dislocation plugs. Thaum qhov kev sim, kev ntxhov siab tshwm sim vim muaj qhov pores nyob rau hauv qhov chaw tsis muaj zog. Raws li qhov kev nyuaj siab shear nce, cov pores sib sau ua ke thiab thaum kawg caj dab, ua rau tawg. Los ntawm substrate thiab micro tensile daim duab ntawm cov khoom sib xyaw qhia pom tseeb toughness yam ntxwv ntawm lub pob txha tawg, nrog rau qee tus naj npawb ntawm elliptical lossis ncig qhov sib txawv ntawm qhov sib txawv ntawm qhov chaw, tsis sib npaug ntawm qhov loj me, qhia tias cov khoom tau underwent cov yas deformation tseem ceeb ua ntej. tawg.
