Paper Title:
Effect of Ti Addition on the Microstructure and Mechanical Properties of Cast AZ91 Magnesium Alloy
  Abstract

Ti addition to AZ91 alloy has been investigated with conventional casting. The microstructure and mechanical property were examined. The results show that addition of Ti with an amount of 0.1~0.5%wt resulted in a refinement of the as-cast microstructure. The morphology of β phase is changed from coarse, uneven, semi-continuous skeletal network to small, uniform, short rod-like or granular. When the content of Ti is 0.4wt%, the tensile strength and elongation go up to maximum value of 197 MPa and 6.9% respectively. Small addition of 0.2%wt Ti to AZ91 alloy predominantly forms TiAl3 phase, lying in β-phases at the grain boundaries. The mechanism of mechanical properties improvement caused by Ti addition is discussed.

  Info
Periodical
Advanced Materials Research (Volumes 189-193)
Edited by
Zhengyi Jiang, Shanqing Li, Jianmin Zeng, Xiaoping Liao and Daoguo Yang
Pages
3819-3823
DOI
10.4028/www.scientific.net/AMR.189-193.3819
Citation
X. L. Ai, G. F. Quan, J. Yang, Z. M. Liu, "Effect of Ti Addition on the Microstructure and Mechanical Properties of Cast AZ91 Magnesium Alloy", Advanced Materials Research, Vols. 189-193, pp. 3819-3823, 2011
Online since
February 2011
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Price
$32.00
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