The Effect of Shot-Peening Treatment on Microstructure and Corrosion Behavior of Closed-Cell Aluminum Foam

Chengwu Zhang,Xiaochun Li,Yongdong He,Yongliang Mu,Yanhua Chen,Fengjun Zhao

doi:10.4236/wjet.2017.54b010

Abstract

Closed-cell aluminum foam was shot peened at different processing time (0 s, 5 s, 10 s, and 20 s), the intensity was the 0.12 mmA. The X-ray diffraction results showed that the reflections became weakened obviously with the shot peened time increased. Combined with Popa model and lognormal distribute model, the surface microstructure of closed-cell aluminum foam was inves-tigated by using the Rietveld whole pattern fitting analysis method. The results revealed that domain size and microstrain fluctuated along different reflection directions after shot peened, which attributed to the random and anisotropic deformation direction. With the shot peened processing time prolonged, a decrease in domain size and an increase in microstrain were also observed. Moreover, the corrosion behavior of closed-cell aluminum foam was studied by weight-loss test. The results indicated that corrosion properties of specimen subjected to shot peened processing was better than the unpeened specimens.

Highlights

Aluminum foam, a kind of new function-structure materials, has a development application prospect in many aspects
The results revealed that domain size and microstrain fluctuated along different reflection directions after shot peened, which attributed to the random and anisotropic deformation direction
With the following important conclusion being the list: The X-ray diffraction (XRD) results showed that the reflection became broaden obviously with the Shot peening (SP) time increased

Summary

Introduction

A kind of new function-structure materials, has a development application prospect in many aspects. According to the cell space structure, the aluminum foam can be classified as closed cell aluminum foam (CAF) and open aluminum foam. The particularity of foam metal structure endows these mate-. The foam aluminum has got extensive application in different fields [1] [2] [3] [4]

Methods

Results

Conclusion