Fe含量对铸造铝合金导热和力学性能的影响

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Fe含量对铸造铝合金导热和力学性能的影响
Effects of Fe Element on the Thermal Conductivity and Mechanical Properties of Casting Al Alloys
2021年41卷第4期页码：416-419
纸质出版日期： 2021 ，
DOI： 10.15980/j.tzzz.2021.04.005

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[1]周玉立,张俊超,林师朋,钟鼓.Fe含量对铸造铝合金导热和力学性能的影响[J].特种铸造及有色合金,2021,41(04):416-419.

Zhou Yuli, Zhang Junchao, Lin Shipeng, et al. Effects of Fe Element on the Thermal Conductivity and Mechanical Properties of Casting Al Alloys[J]. Special Casting & Nonferrous Alloys, 2021,41(4):416-419.
[1]周玉立,张俊超,林师朋,钟鼓.Fe含量对铸造铝合金导热和力学性能的影响[J].特种铸造及有色合金,2021,41(04):416-419. DOI： 10.15980/j.tzzz.2021.04.005.

Zhou Yuli, Zhang Junchao, Lin Shipeng, et al. Effects of Fe Element on the Thermal Conductivity and Mechanical Properties of Casting Al Alloys[J]. Special Casting & Nonferrous Alloys, 2021,41(4):416-419. DOI： 10.15980/j.tzzz.2021.04.005.

采用重力铸造制备了5组Al-9Si-0.2Mg-xFe（x=0.1、0.4、0.6、0.8、1.0

质量分数

%）合金。通过金相显微镜（OM）、扫描电镜（SEM）和能谱分析（EDS）等手段

考察了Fe含量对合金的微观组织、导热性能及力学性能的影响。结果表明

当Fe含量从0.1%增加到1.0%时

合金中的含Fe相逐渐从汉字状的π相转变为长针状的β相

且相尺寸从几μm增加到100μm以上;相应的合金的热导率降低了6%

抗拉强度降低了11.7%

伸长率降低了66%。当Fe含量超过0.6%时

降幅明显增大。

Al-9Si-0.2Mg-xFe alloys with different Fe content were prepared by gravity casting

and the effects of Fe element on the microstructures

thermal conductivity and mechanical properties of Al alloys were investigated through OM

SEM and EDS analysis.The results indicate that with Fe increasing from 0.1% to 1.0%

the morphology of iron-containing intermetallic is converted from script likeπphase to needle likeβphase

and the dimension is increased from several microns to larger than 100μm.Correspondingly

the thermal conductivity

tensile strength and elongation of alloys are decreased by 6%

11.7% and 66%

respectively

and a sharper decrease occurs when the Fe content is over 0.6%.

Fe元素铸造铝合金导热性能力学性能

Fe ElementCasting Aluminum AlloyThermal ConductivityMechanical Properties

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