Effect of Y on Microstructure and Properties of TiB/Al–Zn–Mg–Cu–Zr

MA Zhifeng; LIU Xing; HUANG Jingcun; HAN Yang; WANG Yuxin; LI Meng; CHEN Ziyong

doi:10.16080/j.issn1671-833x.2023.23/24.094

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Effect of Y on Microstructure and Properties of TiB/Al–Zn–Mg–Cu–Zr

更新时间：2025-10-30

- Effect of Y on Microstructure and Properties of TiB/Al–Zn–Mg–Cu–Zr
- Aeronautical Manufacturing Technology Vol. 66, Issue 23/24, (2023)
- 作者机构：
  
  1. 中国航发北京航空材料研究院铝合金研究所,北京,100095
  2. 中国航发北京航空材料研究院北京市先进铝合金材料及应用工程技术研究中心,北京,100095
  3. 北京工业大学材料与制造学部,北京,100124
- 作者简介：
- 基金信息：
- DOI：10.16080/j.issn1671-833x.2023.23/24.094
  CLC：
- Published：2023
- 稿件说明：
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马志锋，刘行，黄景存，韩杨，王屿鑫，李萌，陈子勇. 稀土Y对TiB2/Al–Zn–Mg–Cu–Zr微观组织与性能的影响[J]. 航空制造技术, 2023, 66(23/24): 94-99. MA Zhifeng, LIU Xing, HUANG Jingcun, HAN Yang, WANG Yuxin, LI Meng, CHEN Ziyong. Effect of Y on Microstructure and Properties of TiB2/Al–Zn–Mg–Cu–Zr[J]. Aeronautical Manufacturing Technology, 2023, 66(23/24): 94-99.

MA Zhifeng, LIU Xing, HUANG Jingcun, et al. Effect of Y on Microstructure and Properties of TiB/Al–Zn–Mg–Cu–Zr[J]. Aeronautical Manufacturing Technology, 2023, 66(23/24).
马志锋，刘行，黄景存，韩杨，王屿鑫，李萌，陈子勇. 稀土Y对TiB2/Al–Zn–Mg–Cu–Zr微观组织与性能的影响[J]. 航空制造技术, 2023, 66(23/24): 94-99. MA Zhifeng, LIU Xing, HUANG Jingcun, HAN Yang, WANG Yuxin, LI Meng, CHEN Ziyong. Effect of Y on Microstructure and Properties of TiB2/Al–Zn–Mg–Cu–Zr[J]. Aeronautical Manufacturing Technology, 2023, 66(23/24): 94-99. DOI： 10.16080/j.issn1671-833x.2023.23/24.094.

MA Zhifeng, LIU Xing, HUANG Jingcun, et al. Effect of Y on Microstructure and Properties of TiB/Al–Zn–Mg–Cu–Zr[J]. Aeronautical Manufacturing Technology, 2023, 66(23/24). DOI： 10.16080/j.issn1671-833x.2023.23/24.094.

摘要

稀土Y 对TiB

颗粒增强复合材料具有优异的细化效果，可改善TiB

颗粒团簇造成的性能损伤，对提高复合材料综合力学性能有重要作用。本文采用传统铸造及热挤压工艺制备3%（质量分数）TiB

/Al–Zn–Mg–Cu–Zr–Y复合材料板材，通过扫描电子显微镜、透射电子显微镜、室温拉伸测试等表征手段研究了不同Y 含量对TiB

增强铝基复合材料的显微组织与力学性能的影响。结果表明，Y 元素的添加可以细化复合材料铸态组织，添加0.1% Y（质量分数）时，细化效果最好，T6态的综合性能最优，抗拉强度为729.85 MPa，延伸率高达8.06%。Y元素的加入使晶界处生成难溶相Al

Y（Zr），热挤压可使其破碎并起到一定强化效应，但过量的Al

Y（Zr）导致材料强度、塑性降低。TiB

颗粒增加了基体内位错密度，起到位错强化、载荷传递强化效应。GP II 和η′是复合材料T6态中主要的纳米强化相。

Abstract

Rare earth Y has excellent refining effect on TiB

particle reinforced composites

and can improve the performance damage caused by TiB

particle clusters. It plays an important role in improving the comprehensive mechanical properties of composites. In this paper

3% (mass fraction) TiB

/Al–Zn–Mg–Cu–Zr–Y composite plates were prepared by traditional casting and hot extrusion. The effects of Y content on the microstructure and mechanical properties of TiB

–reinforced aluminum matrix composites were investigated by scanning electron microscopy (SEM

)

transmission electron microscopy (TEM) and tensile test at room temperature. The results show that the as-cast microstructure of composites can be refined by addition of Y

and the refining effect is the best when 0.1% Y (mass fraction) is added. The composite with 0.1% Y (mass fraction) has the best mechanical properties

with the ultimate tensile strength (UTS) of 729.85 MPa and the elongation (EL) of 8.06%. The addition of Y element leads to the formation of insoluble phase Al

Y(Zr) at the grain boundary

which can be broken and strengthened by hot extrusion. Excessive Al

Y(Zr) leads to the decrease of strength and plasticity of the material. TiB

particles can increase the dislocation density in the matrix

and have the effect of dislocation strengthening and load transfer strengthening. GP II and η′ are the main nano-strengthening phases in the T6 state of the composites.

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