Microstructure and Mechanical Properties of BH22 Piston Alloy in Squeezing Casting

Qian Zhao1; Liu Xiangfa1; Wei Zuoshan2; Li Yongcheng2; Wang Liyan2

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Microstructure and Mechanical Properties of BH22 Piston Alloy in Squeezing Casting
Issue 1, Pages: 40-42(2008)
Published： 2008 ，
DOI：

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[1]钱钊,刘相法,魏作山,李勇铖,王丽艳.挤压铸造BH122活塞合金的显微组织与力学性能[J].特种铸造及有色合金,2008(01):40-42+2.

Qian Zhao1, Liu Xiangfa1, Wei Zuoshan2, et al. Microstructure and Mechanical Properties of BH22 Piston Alloy in Squeezing Casting. [J]. Special Casting & Nonferrous Alloys (1):40-42(2008)
[1]钱钊,刘相法,魏作山,李勇铖,王丽艳.挤压铸造BH122活塞合金的显微组织与力学性能[J].特种铸造及有色合金,2008(01):40-42+2. DOI：

Qian Zhao1, Liu Xiangfa1, Wei Zuoshan2, et al. Microstructure and Mechanical Properties of BH22 Piston Alloy in Squeezing Casting. [J]. Special Casting & Nonferrous Alloys (1):40-42(2008) DOI：

摘要

研究了经挤压铸造BH122活塞合金的显微组织和力学性能。结果发现

挤压铸造BH122合金组织中共晶Si呈粗棒或块状分布

不同于典型重力铸造BH122合金中的针片状;挤压铸造可促进Al9FeNi相的大量析出。经挤压铸造后

合金的抗拉强度和硬度均有明显提高

分别可达300.3MPa和HB120。

Abstract

Microstructure and mechanical properties of BH22 piston alloy in squeezing casting have been investigated.It is revealed that the eutectic Si phase in microstructure of squeezing casting BH22 alloy is characterized by the coarse bar or block

which is different from acicular structure in gravity-casting BH22 alloy.In addition

the amounts of creation of Al9FeNi phase in the alloy can be observed in squeezing casting.Compared with those of gravity die casting ones

the tensile strength and hardness of squeezing casting BH22 piston alloy can be increased evidently

reaching up to 300.3 MPa and HB120

respectively.