Iyo uhuza ibyuma na aluminiyumu, reaction iri hagati ya Fe na Al atom mugihe cyo guhuza ikora ibice bivangavanze (IMCs).Kubaho kwa IMC bigabanya imbaraga za mashini zo guhuza, birakenewe rero kugenzura ingano yibi bikoresho.Impamvu yo gushiraho IMC nuko solubilité ya Fe muri Al ikennye.Niba irenze umubare runaka, irashobora kugira ingaruka kumikorere ya weld.IMC ifite imiterere yihariye nko gukomera, guhindagurika gukomeye no gukomera, hamwe nibiranga morfologiya.Ubushakashatsi bwerekanye ko ugereranije nizindi IMC, urwego rwa Fe2Al5 IMC rufatwa nkurunuka cyane (11.8)± 1.8 GPa) Icyiciro cya IMC, kandi ni nayo mpamvu nyamukuru yo kugabanuka kwimiterere yimashini kubera kunanirwa gusudira.Uru rupapuro rugenzura uburyo bwo gusudira bwa lazeri ya kure ya NIBA ibyuma na aluminiyumu 1050 ukoresheje lazeri ihinduranya impeta, kandi igakora ubushakashatsi bwimbitse ku miterere y’imiterere ya lazeri ku miterere y’imiterere n’imiterere y’ubukanishi.Muguhindura igipimo cyingufu / impeta yingufu, byagaragaye ko muburyo bwo kuyobora, igipimo cyimbaraga / impeta ya 0.2 gishobora kugera kumurongo mwiza wo gusudira uhuza ubuso kandi bikagabanya cyane ubunini bwa Fe2Al5 IMC, bityo bikazamura imbaraga zo gukata kwingingo .
Iyi ngingo irerekana ingaruka zimpinduka zimpeta zoguhindura uburyo bwo guhuza ibice byimiterere hamwe nubukanishi mugihe cyo gusudira kure ya laser ya IF ibyuma na 1050 aluminium.Ibisubizo byubushakashatsi byerekana ko muburyo bwo kuyobora, igipimo cyingufu / impeta ya 0.2 itanga intera nini yo gusudira ihuza ubuso, ibyo bikaba bigaragazwa nimbaraga nini ya 97.6 N / mm2 (imikorere ihuriweho na 71%).Byongeye kandi, ugereranije nimirasire ya Gaussiya ifite ingufu zirenze 1, ibi bigabanya cyane umubyimba wa Fe2Al5 intermetallic compound (IMC) 62% naho uburebure bwa IMC kuri 40%.Muburyo bwo gutobora, ibice hamwe nimbaraga zo hasi byaragaragaye ugereranije nuburyo bwo kuyobora.Birakwiye ko tumenya ko gutunganya ingano byagaragaye cyane mugihe cyo gusudira mugihe igipimo cyimbaraga / impeta cyari 0.5.
Iyo r = 0, ingufu za loop zonyine zibyara, mugihe iyo r = 1, imbaraga zingenzi gusa zibyara.
Igishushanyo mbonera cyimbaraga zingana r hagati yigitereko cya Gaussian nigiti cyumwaka
(a) Igikoresho cyo gusudira;(b) Ubujyakuzimu n'ubugari bw'umwirondoro weld;(c) Igishushanyo mbonera cyerekana icyitegererezo hamwe nimiterere
Ikizamini cya MC: Gusa kubijyanye nigiti cya Gaussian, ikidodo cyo gusudira kibanza muburyo bwo gutwara buke (ID 1 na 2), hanyuma bigahinduka muburyo bwinjira mubice bimwe (ID 3-5), hamwe nibice bigaragara.Iyo imbaraga zimpeta ziyongereye kuva kuri 0 kugeza kuri 1000 W, ntagishobora kugaragara kuri ID 7 kandi ubujyakuzimu bwo gutunganya ibyuma bwari buto.Iyo imbaraga zimpeta ziyongereye kugeza 2000 na 2500 W (indangamuntu 9 na 10), ubujyakuzimu bwa zone ikungahaye cyane.Kumeneka cyane kuri 2500w impeta (ID 10).
Ikizamini cya MR: Iyo imbaraga zibanze ziri hagati ya 500 na 1000 W (ID 11 na 12), icyuma gisudira kiri muburyo bwo kuyobora;Ugereranije ID 12 na ID 7, nubwo imbaraga zose (6000w) ari zimwe, ID 7 ishyira muburyo bwo gufunga.Ibi biterwa no kugabanuka gukabije kwubucucike bwimbaraga kuri ID 12 bitewe nigitekerezo cyiganje kiranga (r = 0.2).Iyo imbaraga zose zigeze kuri 7500 W (ID 15), uburyo bwuzuye bwo kwinjira burashobora kugerwaho, kandi ugereranije na 6000 W yakoreshejwe muri ID 7, imbaraga zuburyo bwuzuye bwiyongera cyane.
Ikizamini cya IC: Uburyo bwakozwe (ID 16 na 17) bwagezweho kuri 1500w power power na 3000w na 3500w power ring.Iyo imbaraga zibanze ari 3000w kandi imbaraga zimpeta ziri hagati ya 1500w na 2500w (ID 19-20), ibice bigaragara bigaragara hagati yimbere yicyuma gikungahaye na aluminiyumu ikungahaye, bigakora ahantu hacengeye umwobo muto.Iyo imbaraga zimpeta ari 3000 na 3500w (ID 21 na 22), gera muburyo bwuzuye bwo kwinjira.
Amashusho ahagarariye ibice bya buri kimenyetso cyo gusudira munsi ya microscope optique
Igishushanyo 4. (a) Isano iri hagati yimbaraga zidasanzwe (UTS) nigipimo cyimbaraga mugupima gusudira;(b) Imbaraga zose zipimisha gusudira
Igicapo 5. (a) Isano iri hagati yikigereranyo na UTS;(b) Isano iri hagati yo kwaguka no kwinjira muri ubujyakuzimu na UTS;(c) Ubucucike bwimbaraga kubizamini byose byo gusudira
Igishushanyo 6. (ac) Vickers microhardness indentation ikarita;(df) Guhuza imiti ya SEM-EDS yerekana imiti yo gusudira ihagarariye;(g) Igishushanyo mbonera cyerekana intera iri hagati yicyuma na aluminium;(h) Fe2Al5 hamwe nubunini bwa IMC bwuburyo bwuburyo bwo gusudira
Igishushanyo 7. (ac) Vickers microhardness indentation ikarita;(f
Igishushanyo 8. (ac) Vickers microhardness indentation kontour ikarita;(f
Igicapo 9. Ikibanza cya EBSD cyerekana ingano yingano yakarere gakungahaye ku cyuma (isahani yo hejuru) mugupima uburyo bwuzuye bwo kwinjiramo, kandi bugereranya ingano yingano
Igicapo 10. SEM-EDS yerekana intera iri hagati yicyuma gikungahaye na aluminiyumu ikungahaye
Ubu bushakashatsi bwakoze iperereza ku ngaruka za lazeri ya ARM ku miterere, microstructure, hamwe nubukanishi bwa IMC muri NIBA ibyuma-1050 aluminium alloy idasa nudusimba twahujwe.Ubushakashatsi bwasuzumye uburyo butatu bwo gusudira (uburyo bwo kuyobora, uburyo bwo kwinjirira bwaho, nuburyo bwuzuye bwo kwinjira) hamwe nuburyo butatu bwatoranijwe bwa lazeri (urumuri rwa Gaussiya, urumuri rwa buri mwaka, na Gaussian annular beam).Ibisubizo byubushakashatsi byerekana ko guhitamo ingufu zikwiranye nigiti cya Gaussiya nigiti cyumwaka nikintu cyingenzi mugucunga imiterere na microstructure ya karubone yimbere, bityo bikagabanya imiterere yubukorikori.Muburyo bwo kuyobora, urumuri ruzengurutse rufite ingufu zingana na 0.2 rutanga imbaraga nziza zo gusudira (71% ikora neza).Muburyo bwo gutobora, urumuri rwa Gaussiya rutanga ubujyakuzimu bunini bwo gusudira hamwe n’ikigereranyo cyo hejuru, ariko ubukana bwo gusudira bwaragabanutse cyane.Igiti cyumwaka gifite ingufu zingana na 0.5 gifite ingaruka zikomeye mugutunganya ibinyampeke kuruhande rwicyuma.Ibi biterwa nubushyuhe bwo hasi bwibiti byumwaka biganisha ku gipimo cyihuta cyo gukonja, hamwe ningaruka zo gukura kwimuka ya Al solute yimuka yerekeza mugice cyo hejuru cyikigozi cyasizwe kumiterere yingano.Hariho isano rikomeye hagati ya michardness ya Vickers hamwe nubuhanuzi bwa Thermo Calc bwijanisha ryijanisha ryicyiciro.Ninini ijanisha rya Fe4Al13, niko microhardness iri hejuru.
Igihe cyo kohereza: Mutarama-25-2024
