热处理对挤压铸造ZA43-Mn合金组织和性能的影响

于海朋; 张尚洲; 白彦华; 孙立涛; 李荣德

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热处理对挤压铸造ZA43-Mn合金组织和性能的影响
Influence of Heat Treatment on the Microstructure and Properties of ZA43-Mn Alloy by Punch Squeeze Casting
2002年第S1期页码：233-235
纸质出版日期： 2002 ，
DOI：

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于海朋, 张尚洲, 白彦华, 等. 热处理对挤压铸造ZA43-Mn合金组织和性能的影响[J]. 特种铸造及有色合金杂志, 2002,(S1):233-235.

Yu Haipeng Zhang Shangzhou Bai Yanhua Sun Litao Li Rongde. Influence of Heat Treatment on the Microstructure and Properties of ZA43-Mn Alloy by Punch Squeeze Casting[J]. Special Casting & Nonferrous Alloys, 2002,(S1):233-235.
于海朋, 张尚洲, 白彦华, 等. 热处理对挤压铸造ZA43-Mn合金组织和性能的影响[J]. 特种铸造及有色合金杂志, 2002,(S1):233-235. DOI：

Yu Haipeng Zhang Shangzhou Bai Yanhua Sun Litao Li Rongde. Influence of Heat Treatment on the Microstructure and Properties of ZA43-Mn Alloy by Punch Squeeze Casting[J]. Special Casting & Nonferrous Alloys, 2002,(S1):233-235. DOI：

摘要

研究了热处理对冲头式挤压铸造ZA43 Mn合金显微组织和力学性能的影响。结果表明 :挤压铸造ZA43 Mn合金的时效处理使α和 β相分解

枝晶偏析减轻

富锰相碎化与钝化

可提高其塑性 (δ5=18% )。固溶处理使富锰相和富铜相分解

基体内二次相弥散析出

晶间组织形态和分布改善

可获得较高强度的铸件 (σb=5 10MPa)

Abstract

Influence of heat treatment on the microstructure and mechanical properties of ZA43 Mn alloy in punch squeeze casting has been studied. The results showed that plasticity of squeez casting ZA43 Mn alloy can be improved by aging treatment （ σ 5 =18%

σ b =430 MPa）

as a result of α and β phases in alloy decomposition

dendritic segregation alleviation

Mn rich phase passivation and disintegration. The casting with high strength （ σ 5 =10%

σ b =510 MPa）can be achieved by solution treatment making Mn rich and Cu rich phases to be decomposed

secondary dispersed phase in matrix to be precipitated and the morphology and distribution of inter dendritic structure to be improved.