ReinVainik-Presentation SMM Chongqing April- 2024 Final translated(1).pdf

1、Grain refinement of aluminium alloyscontaining 0.05 0.15%titanium钛含量0.05 0.15%的铝合金晶粒细化问题研究Rein Vainik,PhD瑞恩 万尼科Chief Scientist for Grain Refinement,STNM立中集团首席晶粒细化科学家瑞恩 威尼科 博士Rein Vainik PhDOptifine超级细化剂技术发明人1981-1986Thesis,Stockholm University斯德哥尔摩大学博士学位1996-2007Opticast Aluminium Opticast技术研究2008-2

2、022MQP 首席科学家2023至今立中集团首席科学家2023至今Swedish Centre for Grain Refinement Research and Testing瑞典晶粒细化研究检测试中心Thesis title:Relation between Phases in Master Alloys of the Al-Ti-B type博士论文：在Al-Ti-B合金中各相的相互关系More than 99%of the volume of low alloyed aluminium alloys cast today have a Ti concentration of betwe

3、en 0 and 0.05%.目前99%的铝低合金化产品的Ti含量在0-0.05%之间The grain refinement of these alloys is explained by classical nucleation and growth theories这类合金的晶粒细化问题可以用经典的成核和晶粒增长限制理论来解释But there is a group of alloys,in which the classical grain refinement theory cannot be applied and must be modified.These alloys con

4、tain between 0.08 and 0.20%Ti.但在Ti含量在0.08-0.2%的铝合金系中的晶粒问题，经典晶粒细化理论无法做出合理解释，并亟待修正We call this phenomenon Ti poisoning该问题我们称之为：钛中毒This is the expected grain size经典理论体系下应得到的晶粒水平And this is what you get实际的晶粒水平There are still some mysteries in the grain refinement of aluminium,and this is one of them.该问题

5、是目前铝晶粒细化未解之谜中之一In order to assist aluminium cast houses to cast high Ti alloys a project has been initiated between 为了给该类铝合金的生产熔铸企业提供解决方案，我们共同开启了研究项目立中四通轻合金集团瑞典晶粒细化研究测试中心NucleationNucleation 成核成核Should occur on as many of the added particles as possible需要在所添加的成核颗粒中尽可能多发生GrowthGrowth 晶粒生长晶粒生长Should b

6、e as slow as possible.In wrought alloys it could be said that the higher the concentration of alloying elements,the slowerthe growth.速度需要尽可能慢，在变形铝当中，合金元素含量越高，晶粒生长越慢Grain refinement theoryGrain refinement theory晶粒细化理论晶粒细化理论A.L.Greer,A.M.Bunn,A.Tronche,P.V.Evans and D.J.Bristow:Acta Mater.,2000,48,282