2024/6061铝合金铸造复合行为及其界面组织性能

林椿梅; 王于金; 徐维良; 杨超; 秦芳诚

doi:10.15980/j.tzzz.2020.10.018

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2024/6061铝合金铸造复合行为及其界面组织性能
Casting Composite Behavior,Interfacial Microstructure and Properties of 2024/6061 Aluminum Alloy
2020年40卷第10期页码：1126-1130
纸质出版日期： 2020 ，
DOI： 10.15980/j.tzzz.2020.10.018

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[1]林椿梅,王于金,徐维良,杨超,秦芳诚.2024/6061铝合金铸造复合行为及其界面组织性能[J].特种铸造及有色合金,2020,40(10):1126-1130.

Lin Chunmei, Wang Yujin, Xu Weiliang, et al. Casting Composite Behavior,Interfacial Microstructure and Properties of 2024/6061 Aluminum Alloy[J]. Special Casting & Nonferrous Alloys, 2020,40(10):1126-1130.
[1]林椿梅,王于金,徐维良,杨超,秦芳诚.2024/6061铝合金铸造复合行为及其界面组织性能[J].特种铸造及有色合金,2020,40(10):1126-1130. DOI： 10.15980/j.tzzz.2020.10.018.

Lin Chunmei, Wang Yujin, Xu Weiliang, et al. Casting Composite Behavior,Interfacial Microstructure and Properties of 2024/6061 Aluminum Alloy[J]. Special Casting & Nonferrous Alloys, 2020,40(10):1126-1130. DOI： 10.15980/j.tzzz.2020.10.018.

摘要

采用液-液复合铸造法制备2024/6061铝合金铸坯

研究不同浇注间隙时间下双金属复合铸造行为与铸坯组织特点

分析界面组织演变、元素扩散规律和结合性能

揭示双金属铸坯界面的结合机理。结果表明

不同浇注间隙时间下复合铸坯均表现为冶金结合

界面形貌清晰、牢固。界面两侧Mg、Si、Cu元素均存在一定程度扩散

其中Si扩散距离最远。浇注间隙时间为20s时

复合坯料为完全的冶金结合

结合性能介于2024和6061铝合金之间

其硬度（HV）、屈服强度、抗拉强度和伸长率分别为88.7、193.4 MPa、290.4MPa和20.8%。

Abstract

The liquid-liquid composited casting was used to produce 2024/6061 aluminium casting blank.The microstructure characteristics of the bimetallic casting blank with different pouring interval time was investigated.The evolution of the interfacial microstructure

element diffusion laws and bonding properties were analyzed.The interface bonding mechanism of the bimetallic blank was described.The results show that the composited casting blank bonding with different interval time is characterized by metallurigical

and the bonding interface is clear and sound.The Mg

and Cu elements on both sides of the interface are diffused to some extent

where Si has the farthest diffusion distance.When the interval time is 20 s

the composite blank is characterized by the completed metallurgical bonding

and the bonding properties are between those of 2024 and 6061 alloys.The hardness

yield strength

tensile strength and elongation are 88.7 HV

193.4 MPa

290.4 MPa and 20.8%

respectively.