Mg-Al-Zn系镁合金用钎料的研究中期报告摘要：本文对Mg-Al-Zn系镁合金用钎料的研究进行了中期报告。文章首先介绍了Mg-Al-Zn系镁合金的特性和应用领域，再介绍了目前钎接技术在Mg-Al-Zn系合金焊接中的应用状况。然后，本文重点对目前广泛应用的Cu-Al合金钎料进行了研究分析，总结了其钎接强度和微观组织特征，并根据其优点和缺点提出了改进措施。最后，本文还探讨了其他一些新型钎料的应用前景和挑战，并为今后的研究提出了建议。关键词：Mg-Al-Zn系合金，钎接技术，Cu-Al合金钎料，微观组织，改进措施Abstract:ThispaperpresentsamidtermreportonthestudyofbrazingmaterialsforMg-Al-Znseriesmagnesiumalloys.ThearticlefirstintroducesthecharacteristicsandapplicationfieldsofMg-Al-Znseriesmagnesiumalloys,andthenintroducesthecurrentapplicationstatusofbrazingtechnologyinMg-Al-Znseriesalloywelding.Then,thispaperfocusesontheresearchandanalysisofthewidelyusedCu-Alalloybrazingmaterial,summarizesitsbrazingstrengthandmicrostructurecharacteristics,andproposesimprovementmeasuresbasedonitsadvantagesanddisadvantages.Finally,thispaperalsodiscussestheapplicationprospectsandchallengesofothernewbrazingmaterials,andproposessuggestionsforfutureresearch.Keywords:Mg-Al-Znseriesmagnesiumalloys,brazingtechnology,Cu-Alalloybrazingmaterial,microstructure,improvementmeasures.