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Effect of hydrogen fluoride and magnesium oxide on AZ31 Mg alloy/carbon fiber-reinforced plastic composite by thermal laser joining technique

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Journal of Magnesium and Alloys 2024年第7期12卷 2874-2889页

作者： Andrews Nsiah Ashong barton mensah arkhurst Youn Seoung Lee Mok-Young Lee Jeoung Han Kim School of Materials Science&Engineering University of New South Wales SydneyNSW2052Australia Department of Information and Communication Engineering Hanbat National UniversityYuseong-guDaejeonSouth Korea Welding&joining research group steel solution research laboratoryPOSCOIncheonRepublic of Korea Department of Materials Science&Engineering Hanbat National UniversityYuseong-guDaejeonSouth Korea

Although hydrofluoric acid(HF)surface treatment is known to enhance the joining of metals with polymers,there is limited information on its effect on the joining of AZ31 alloy and carbon-fiber-reinforced plastics(CFRPs)through laser-assisted metal and plastic direct joining(LAMP).This study uses the LAMP technique to produce AZ31-CFRP *** joining process involves as-received AZ31,HFpretreated AZ31,and thermally oxidized HF-pretreated AZ31 alloy ***,the bonding strength of joints prepared with thermally oxidized AZ31 alloy sheets is examined to ascertain the combined effect of HF treatment and thermal oxidation on bonding *** microstructures,surface chemical interactions,and mechanical performances of joints are investigated under tensile shear *** factors,such as bubble formation,CFRP resin decomposition,and mechanical interlocking considerably affect joint ***,surface chemical interactions between the active species on metal parts and the polar amide along with carbonyl groups of polymer play a significant role in improving joint *** prepared with surface-pretreated AZ31 alloy sheets show significant improvements in bonding strength.

关键词： Thermal laser joining Thermal oxidation Hydrofluoric acid pretreatment Mechanical interlocking Covalent bonds Chemical interactions

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Effect of tellurium on the microstructure and mechanical properties of Fe-14Cr oxide-dispersion-strengthened steels produced by additive manufacturing

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Journal of Materials Science & Technology 2021年第36期95卷 114-126页

作者： barton mensah arkhurst Jee Hwan Bae Min Young Na Hye Jung Chang Hyun Gil Kim Il Hyun Kim Ho Jin Ryu Jeoung Han Kim School of Materials Science and Engineering University of New South Wales SydneyNSW 2052Australia Advanced Analysis Center Korea Institute of Science and Technology SeoulSeongbuk-guRepublic of Korea LWR Fuel Technology Division Korea Atomic Energy Research InstituteDaejeonYuseong-guRepublic of Korea Department of Nuclear and Quantum Engineering KAISTDaejeonYuseong-guRepublic of Korea Department of Materials Science&Engineering Hanbat National UniversityRepublic of Korea

Conventionally,Te has primarily been used to improve the machinability of steel and its *** this work,Te was used to refine the grains of an oxide-dispersion-strengthened(ODS)steel produced by additive manufacturing(AM)with fixed processing *** of Te to the raw powder produced an ODS steel with a fine-grained microstructure,in contrast to the ODS steel manufactured without ***,the addition of Te resulted in superior yield strength and ultimate tensile strength,which was attributed to the combined effects of grain refinement and the finer nanoparticles(NPs)composed of Terich composite NPs and Cr-rich *** the first time,the AM technique was used to obtain grain and nanoparticle sizes of~3.4μm and 6 nm,respectively,from the Te-added ODS steel.

关键词： Additive manufacturing Directed energy deposition Oxide-dispersion-strengthened steel Nanoparticle Tellurium

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