Effects of Different Special Casting Processes on the Microstructure and Properties of QA110-4-4 Aluminum Bronze

Lin Gaoyong1; Zeng Juhua1; Zeng Xiaohui1; Sun Liping1; Zhou Yuxiong1; Wang Li1

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Effects of Different Special Casting Processes on the Microstructure and Properties of QA110-4-4 Aluminum Bronze
- role： First author 第一作者
- Affiliation：
  School of Materials Science and Engineering, Central South University,Changsha,China
  the Key Laboratory of Non-ferrous Metal Materials Science and Engineering, Ministry of Education,Changsha,China
Lin Gaoyong1
1 2 ,
- Affiliation：
  School of Materials Science and Engineering, Central South University,Changsha,China
Zeng Juhua1
1 ,
- Affiliation：
  School of Materials Science and Engineering, Central South University,Changsha,China
Zeng Xiaohui1
1 ,
- Affiliation：
  School of Materials Science and Engineering, Central South University,Changsha,China
Sun Liping1
1 ,
- Affiliation：
  School of Materials Science and Engineering, Central South University,Changsha,China
Zhou Yuxiong1
1 ,
- Affiliation：
  School of Materials Science and Engineering, Central South University,Changsha,China
Wang Li1
1
Vol. 30, Issue 12, Pages: 1171-1174(2010)
Published： 2010 ，
DOI：

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[1]林高用,曾菊花,曾晓慧,孙利平,周玉雄,王莉.特种铸造方式对QAl10-4-4铝青铜组织与性能的影响[J].特种铸造及有色合金,2010,30(12):1171-1174+1078.

Lin Gaoyong1, Zeng Juhua1, Zeng Xiaohui1, et al. Effects of Different Special Casting Processes on the Microstructure and Properties of QA110-4-4 Aluminum Bronze. [J]. Special Casting & Nonferrous Alloys 30(12):1171-1174(2010)
[1]林高用,曾菊花,曾晓慧,孙利平,周玉雄,王莉.特种铸造方式对QAl10-4-4铝青铜组织与性能的影响[J].特种铸造及有色合金,2010,30(12):1171-1174+1078. DOI：

Lin Gaoyong1, Zeng Juhua1, Zeng Xiaohui1, et al. Effects of Different Special Casting Processes on the Microstructure and Properties of QA110-4-4 Aluminum Bronze. [J]. Special Casting & Nonferrous Alloys 30(12):1171-1174(2010) DOI：

Effects of Different Special Casting Processes on the Microstructure and Properties of QA110-4-4 Aluminum Bronze

Lin Gaoyong1 ; Zeng Juhua1 ; Zeng Xiaohui1 ; Sun Liping1 ; Zhou Yuxiong1 ; Wang Li1 ;

Abstract

Effects of different special casting methods, such as semi-continuous casting, centrifugal casting and vacuum suction, on microstructure and properties of QA110-4-4 aluminum bronze were investigated by OM （optical microscope）, XRD （X-ray diffraction）, tensile testing, SEM （scanning electron microscope） and EDS （energy dispersive spectrometer）. The results show that α phase, γ2 phase and K phase can be observed in the alloys prepared by three kinds of casting methods. In addition, a little metastable β′ phase can be observed in microstructure of vacuum suction alloy. Microstructure of vacuum suction alloy exhibits the finest and the most compactness, in which K phase is homogeneously distributed. Meanwhile, the highest microhardness and tensile strength as well as hardness can be obtained. Inner-outer microstructure of semi-continuous casting and centrifugal casting specimens become heterogeneous, in which K phase is partly agglomerated. Micro-hardness of centrifugal casting specimen exhibits periodically fluctuated from the edge to the heart. The peak hardness is increased nearby the edge.

transl

Keywords

Special Casting; Aluminum Bronze; Microstructure; Properties

transl

摘要

采用金相组织分析、X射线衍射物相分析、力学性能测试、扫描电镜和能谱分析研究了半连续铸造、离心铸造和真空吸铸3种铸造方式下QAl10-4-4铝青铜的组织与性能。结果表明

在3种铸造方式下合金均含有α相、γ2相和K相

但是真空吸铸的组织中还含有少量的亚稳β′相;真空吸铸的组织最致密、细小

其中的K相均匀弥散分布在基体上

组织中各相的硬度以及合金的抗拉强度和硬度均最高;半连续铸造和离心铸造的内外组织不均匀

部分K相发生团聚

其中离心铸造组织的硬度从边部至中部呈现周期性的起伏

且越靠近铸锭边部

其峰值硬度越大。

Abstract

Effects of different special casting methods

such as semi-continuous casting

centrifugal casting and vacuum suction

on microstructure and properties of QA110-4-4 aluminum bronze were investigated by OM （optical microscope）

XRD （X-ray diffraction）

tensile testing

SEM （scanning electron microscope） and EDS （energy dispersive spectrometer）. The results show that α phase

γ2 phase and K phase can be observed in the alloys prepared by three kinds of casting methods. In addition

a little metastable β′ phase can be observed in microstructure of vacuum suction alloy. Microstructure of vacuum suction alloy exhibits the finest and the most compactness

in which K phase is homogeneously distributed. Meanwhile

the highest microhardness and tensile strength as well as hardness can be obtained. Inner-outer microstructure of semi-continuous casting and centrifugal casting specimens become heterogeneous

in which K phase is partly agglomerated. Micro-hardness of centrifugal casting specimen exhibits periodically fluctuated from the edge to the heart. The peak hardness is increased nearby the edge.

关键词

特种铸造铝青铜组织性能

Keywords

Special CastingAluminum BronzeMicrostructureProperties

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Effects of Heat Treatment on Microstructure and Mechanical Properties of Die Cast Al-Cu Alloy with High Strength and Ductility

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