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Mu kafukufuku wowonetsedwa kale mu Journal of Nuclear Materials, chitsulo chosapanga dzimbiri chopangidwa mwatsopano chokhala ndi ma NbC precipitates ogawidwa mofanana (ARES-6) ndi chitsulo chosapanga dzimbiri chodziwika bwino cha 316 chinafufuzidwa pogwiritsa ntchito ma ion irradiation amphamvu. Khalidwe lokhala ndi kutupa pambuyo poyesa kuyerekeza ubwino wa ARES-6.
Kafukufuku: Kukana kutupa kwa chitsulo chosapanga dzimbiri cha austenitic chokhala ndi nanoscale NbC yogawidwa mofanana kumachepa pansi pa kuwala kwa ma ion ambiri. Chithunzi chochokera kwa: Parilov/Shutterstock.com
Zitsulo zosapanga dzimbiri za Austenitic (SS) zimagwiritsidwa ntchito kwambiri ngati zinthu zamkati zopangidwa mu ma reactor amakono amadzi owala komwe zimakumana ndi ma radiation ambiri.
Kusintha kwa mawonekedwe a zitsulo zosapanga dzimbiri za austenitic pakagwidwa neutron kumakhudza kwambiri magawo akuthupi monga kuuma kwa radiation ndi kuwonongeka kwa kutentha. Ma circulation cycles, porosity, ndi excitation ndi zitsanzo za kusintha kwa microstructure komwe kumachitika chifukwa cha radiation komwe kumapezeka kwambiri mu zitsulo zosapanga dzimbiri za austenitic.
Kuphatikiza apo, chitsulo chosapanga dzimbiri cha austenitic chimakhudzidwa ndi kukulira kwa vacuum komwe kumachitika chifukwa cha kuwala kwa dzuwa, zomwe zingayambitse kuwonongeka kwamphamvu kwa zigawo zapakati pa reactor. Chifukwa chake, zatsopano mu ma reactor amakono a nyukiliya omwe amakhala nthawi yayitali komanso opanga bwino zimafuna kugwiritsa ntchito ma assemblies ovuta omwe amatha kupirira kuwala kwa dzuwa kwambiri.
Kuyambira kumayambiriro kwa zaka za m'ma 1970, njira zambiri zaperekedwa popanga zinthu zowononga ma radiation. Monga gawo la kuyesetsa kukonza mphamvu ya ma radiation, ntchito ya mbali zazikulu za kufalikira kwa vacuum yaphunziridwa. Koma ngakhale zili choncho, chifukwa zitsulo zosapanga dzimbiri za nickel austenitic zimakhala zosavuta kugwidwa ndi ma radiation chifukwa cha kusintha kwa madontho a helium, zitsulo zosapanga dzimbiri za austenite sizingatsimikizire chitetezo chokwanira cha dzimbiri pansi pa mikhalidwe yowononga. Palinso zoletsa zina zowonjezera mphamvu ya ma radiation pokonza kasinthidwe ka alloy.
Njira ina ndikuphatikiza zinthu zosiyanasiyana zomwe zingagwiritsidwe ntchito ngati malo otulutsira madzi omwe amalephera kugwira ntchito. Sinki ingathandize kuyamwa zolakwika zamkati zomwe zimayambitsidwa ndi kuwala kwa dzuwa, kuchedwetsa mapangidwe a mabowo ndi mabwalo ozungulira omwe amapangidwa ndi kusonkhanitsa malo opanda kanthu ndi mipata.
Kusuntha kwa zinthu zambiri, ma precipitates ang'onoang'ono, ndi mapangidwe a granular aperekedwa ngati zoyamwitsa zomwe zingathandize kuti kuwala kugwire bwino ntchito. Kapangidwe ka dynamic velocity conceptual ndi maphunziro angapo owonera avumbulutsa ubwino wa zinthu zazing'onozi poletsa kukula kwa zinthu zopanda kanthu ndikuchepetsa kulekanitsa kwa zigawo zomwe zimayambitsidwa ndi kuwala. Komabe, mpatawo umachira pang'onopang'ono chifukwa cha kuwala ndipo sugwira ntchito mokwanira ngati malo otulutsira madzi.
Ofufuza posachedwapa apanga chitsulo chosapanga dzimbiri cha austenitic chokhala ndi gawo lofanana la nano-niobium carbide precipitates chomwe chimafalikira mofanana mu matrix pogwiritsa ntchito njira yopangira zitsulo zamafakitale yomwe pambuyo pake idatchedwa ARES-6.
Ma precipitates ambiri akuyembekezeka kupereka malo okwanira oti azitha kupirira ma radiation, zomwe zimapangitsa kuti ma alloys a ARES-6 azitha kugwiritsa ntchito bwino ma radiation. Komabe, kupezeka kwa ma precipitates a niobium carbide osawoneka bwino sikupereka mphamvu zomwe zimayembekezeredwa za kukana ma radiation kutengera chimango.
Chifukwa chake, cholinga cha kafukufukuyu chinali kuyesa zotsatira zabwino za niobium carbides yaying'ono pa kukana kukula. Zotsatira za kuchuluka kwa mlingo zokhudzana ndi kutalika kwa matenda opatsirana a nanoscale panthawi ya kuphulika kwa ma ion olemera zafufuzidwanso.
Pofuna kufufuza kuchuluka kwa kusiyana, aloyi yatsopano ya ARES-6 yokhala ndi niobium nanocarbides yofalikira bwino inasonkhezera chitsulo cha mafakitale ndikuchiponya ndi ma ion a nickel a 5 MeV. Zomwe zapezekazi zikuchokera pa muyeso wa kutupa, maphunziro a microstructure ya nanometer electron microscopy, ndi mawerengedwe a mphamvu ya dontho.
Pakati pa makhalidwe a ARES-6P, kuchuluka kwa nanoniobium carbide precipitates ndi chifukwa chachikulu chomwe chimapangitsa kuti kukhuthala kukhale kwakukulu panthawi yotupa, ngakhale kuti kuchuluka kwa nickel kumakhalanso ndi gawo. Popeza kuchuluka kwa kusuntha kwa madzi, ARES-6HR yawonetsa kukula kofanana ndi ARES-6SA, zomwe zikusonyeza kuti, ngakhale kuti kapangidwe ka thankiyo kali ndi mphamvu zambiri, kusuntha kwa madzi mu ARES-6HR kokha sikungapereke malo abwino otulutsira madzi.
Pambuyo pophulitsa ndi ma ayoni olemera, mtundu wa nanoscale quasi-crystalline wa precipitates wa niobium carbide umawonongeka. Zotsatira zake, pogwiritsa ntchito malo ophulitsa ma ayoni olemera omwe amagwiritsidwa ntchito pantchitoyi, tizilombo toyambitsa matenda ambiri omwe analipo kale m'zitsanzo zomwe sizinawotchedwe pang'onopang'ono timatha pang'onopang'ono mu matrix.
Ngakhale kuti mphamvu ya ARES-6P ikuyembekezeka kuwirikiza katatu kuposa mbale yachitsulo chosapanga dzimbiri ya 316, kuwonjezeka komwe kumayesedwa kwa kukula kuli pafupifupi kasanu ndi kawiri.
Kusungunuka kwa ma precipitates a niobium nanocarbide akakumana ndi kuwala kukufotokoza kusiyana kwakukulu pakati pa kukana kutupa komwe kumayembekezeredwa ndi komwe kukuchitika kwa ARES-6P. Komabe, ma crystallites a nanoniobium carbide akuyembekezeka kukhala olimba kwambiri pamlingo wotsika wa mlingo, ndipo kulimba kwa ARES-6P kudzawonjezeka kwambiri mtsogolomu pansi pa mikhalidwe yabwinobwino ya fakitale yamagetsi ya nyukiliya.
Shin, JH, Kong, BS, Jeong, C., Eom, HJ, Jang, C., & AlMousa, N. (2022). Shin, JH, Kong, BS, Jeong, C., Eom, HJ, Jang, C., & AlMousa, N. (2022). Shin, JH, Kong, BS, Chon, K., Eom, HJ, Jang, K., & Al-Musa, N. (2022). Shin, JH, Kong, BS, Jeong, C., Eom, HJ, Jang, C., & AlMousa, N. (2022). Shin, JH, Kong, BS, Jeong, C., Eom, HJ, Jang, C., & AlMousa, N. (2022). Shin, JH, Kong, BS, Chon, K., Eom, HJ, Jang, K., & Al-Musa, N. (2022).Kukana kutupa kwa chitsulo chosapanga dzimbiri cha austenitic chokhala ndi ma NbC ogawidwa mofanana kumafalikira pansi pa kuwala ndi ma ayoni olemera. Journal of Nuclear Materials. Ikupezeka pa: https://www.sciencedirect.com/science/article/pii/S0022311522001714?via%3Dihub.
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Shahir adamaliza maphunziro ake ku Faculty of Aerospace Engineering ya Islamabad Institute of Space Technology. Wachita kafukufuku wambiri mu zida zoyendetsera ndege ndi masensa, mphamvu zamakompyuta, kapangidwe ka ndege ndi zipangizo, njira zowongolera, robotics, ndi mphamvu zoyera. Chaka chatha adagwira ntchito ngati mlangizi wodziyimira pawokha pankhani ya uinjiniya wa ndege. Kulemba zaukadaulo nthawi zonse kwakhala kuli mphamvu kwa Shahir. Kaya amapambana mphoto m'mipikisano yapadziko lonse lapansi kapena amapambana mipikisano yolemba yakomweko, amachita bwino kwambiri. Shahir amakonda magalimoto. Kuyambira mpikisano wa Formula 1 ndi kuwerenga nkhani zamagalimoto mpaka mpikisano wa kart, moyo wake umazungulira magalimoto. Amakonda kwambiri masewera ake ndipo nthawi zonse amayesetsa kupeza nthawi yochitira izi. Squash, mpira, cricket, tennis ndi mpikisano ndi zinthu zomwe amakonda kukhala nazo nthawi.
Thukuta lotentha, Shahr. (Marichi 22, 2022). Kukana kutupa kwa aloyi yatsopano ya nanomodified reactor kwawunikidwa. AJonano. Yatengedwa pa Seputembala 11, 2022 kuchokera ku https://www.azonano.com/news.aspx?newsID=38861.
Thukuta Lotentha, Shahr. "Kusanthula Kukana Kutupa kwa Ma Alloys Atsopano a Nano-Modified Reactor". AJonano.Seputembala 11, 2022.Seputembala 11, 2022.
Thukuta lotentha, Shahr. “Kusanthula Kukana Kutupa kwa Ma Alloys Atsopano a Nano-Modified Reactor”. AJonano. https://www.azonano.com/news.aspx?newsID=38861. (Kuyambira pa Seputembala 11, 2022).
Thukuta lotentha, Shahr. 2022. Kusanthula kwa kukana kutupa kwa ma alloys atsopano a reactor nanomodified. AZoNano, idapezeka pa 11 Seputembala 2022, https://www.azonano.com/news.aspx?newsID=38861.
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