Evolution of surface roughness of a cast Al-Si-Cu piston alloy during thermal exposure

被引：2

作者：

Bao, Tong ^{[1
]}

Li, Jian-ping ^{[1
]}

Liu, Lei ^{[1
]}

Li, Hai-ying ^{[2
]}

Yang, Zhong ^{[1
]}

Wang, Jian-li ^{[1
]}

Guo, Yong-chun ^{[1
]}

Li, Bo-yan ^{[1
]}

Yang, Wei ^{[1
]}

Zheng, Jia-qi ^{[1
]}

机构：

[1] Xian Technol Univ, Sch Mat & Chem Engn, Shaanxi Key Lab Photoelect Funct Mat & Devices, Xian 710021, Peoples R China

[2] China North Engine Res Inst Tianjin, Tianjin 300400, Peoples R China

来源：

JOURNAL OF CENTRAL SOUTH UNIVERSITY | 2020年 / 27卷 / 06期

关键词：

surface roughness; thermal exposure; Al-Si-Cu piston alloy; microstructure; oxidation; SUBSTRATE ROUGHNESS; FATIGUE-STRENGTH; OXIDATION; COATINGS;

D O I：

10.1007/s11771-020-4396-9

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

In the present work, samples of Al-Si-Cu piston alloy after T6 heat treatment were exposed for 2 h at temperatures ranging from 400 to 550 degrees C. The evolution of surface roughness and microstructure of the alloy during thermal exposure was studied by combination methods of roughness profiles, optical and scanning electron microscopy as well as XRD analysis. It is found that the roughness and mass of the alloy increase with the raise of the thermal exposure temperature, and the increasing rates of them are slow as the exposure temperature is below 500 degrees C, but accelerates abruptly when the temperature is higher than 500 degrees C. The variation of surface roughness of the alloy is closely related to phase transformation and oxidation during the thermal exposure.

引用

页码：1645 / 1653

页数：9

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