Paper Title:
Surface Modification of AZ91D Magnesium Alloy Using Millisecond, Nanosecond and Femtosecond Lasers
  Abstract

Poor surface properties of magnesium alloys limit their extensive use in many applications. Laser surface engineering can be used to enhance surface-related properties of Mg alloys, and the purpose of this paper is to study the effect of laser pulse duration on surface of AZ91D Mg alloy. After millisecond-pulse laser treatment, ripples and cellular/dendrite as well as nanoscale -Mg17Al12 precipitates in the -Mg matrix were found in the surface microstructure, moreover, the melt depth was more than 150 micron. After nanosecond-pulse laser treatment, craters of 10 to 50 micron in diameter were observed on the surface due to plasma expansion and melted matter ejection during local boiling process, and the melt depth was nearly 15 micron. However, femtosecond-pulse laser treatment produced various micro- and nano-structures within a very thin layer on the surface.

  Info
Periodical
Key Engineering Materials (Volumes 447-448)
Edited by
Jianhong Zhao, Masanori Kunieda, Guilin Yang and Xue-Ming Yuan
Pages
695-699
DOI
10.4028/www.scientific.net/KEM.447-448.695
Citation
Y. C. Guan, W. Zhou, H. Y. Zheng, Z. L. Li, "Surface Modification of AZ91D Magnesium Alloy Using Millisecond, Nanosecond and Femtosecond Lasers", Key Engineering Materials, Vols. 447-448, pp. 695-699, 2010
Online since
September 2010
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Arthur Medvid, Petr M. Lytvyn
411
Authors: Arthur Medvid, A. Mychko, A. Pludons, Yu. Naseka
Abstract:For the first time, a new PL band at 1.8718 eV is observed after irradiation of Cd1-xZnxTe (x = 0.1) crystal by Nd:YAG laser at intensity...
107
Authors: Omid Tayefeh Ghalehbeygi, Vural Kara, Levent Trabzon, Selcuk Akturk, Huseyin Kizil
Abstract:We fabricated Si Nano-columns by a femtosecond laser with various wavelengths and process parameters, whilst the specimen was submerged in...
15
Authors: Jian Hong Wang, Pei Kang Bai, Zhen Lin Zhang, Yu Xin Li
Chapter 2: Materials Science
Abstract:Laser surface cladding of Ti6Al4V alloy by Ti+Al+C powders (Titanium and carbon powders with an atomic ratio of 1:1 were mixed with 20-60wt.%...
738
Authors: Jian Ting Xu, Dong Qing Yuan
Chapter 13: Material Processing Technology
Abstract:Regular micro-apparatus which covered with periodic nano-hole, nano-ridge and ripple structures on silicon bulk were formed by laser...
2186