Analysis of Metallographic Characteristics of Aluminum Alloy for Turbocharged Impellers
- 1 Weichai Power Co., Ltd., Weifang, China
- 2 Weichai Power Co., Ltd., Weifang, China
- 3 Weichai Power Co., Ltd., Weifang, China
- 4 Weichai Power Co., Ltd., Weifang, China
- 5 Weichai Power Co., Ltd., Weifang, China
- 6 Weichai Power Co., Ltd., Weifang, China
Abstract
In this paper, the composition, two-dimensional and three-dimensional microstructure of heat-resistant wrought aluminum alloy with strong oxidation resistance, heat resistance and easy processing are analyzed by using direct reading spectrometer, metallographic microscope and scanning electron microscope. The main alloy elements of heat-resistant forging aluminum alloy include Cu, Mg, Si, Ni and Fe. The α solid solution of each element in aluminum consists of S phase (Al 2 CuMg), Mg 2 Si phase, bright gray Al 2 CuNi phase and dark brown Al 9 FeNi phase. The distribution of each phase in the aluminum alloy is determined by the three-dimensional energy spectrum analysis of the microstructure, and the distribution of each phase in the crystal position is analyzed. The mechanism of heat resistance, easy processing type and wear resistance is obtained, which provides the theoretical basis for the development and use of heat-resistant forged aluminum alloy.
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