Paper Title:
Influences of Complex Modification of RE and P on the Microstructure and Impact Toughness of Hypereutectic Al-24Si Alloy
  Abstract

The influences of RE and P complex modification on microstructure and impact toughness of hypereutectic Al-24Si alloy are investigated. The result shows that the coarse block primary silicon is refined obviously and its edges and angles are blunted under the influences of the complex modification of RE and P. The large needle eutectic silicon is modified to the short-rod or particle ones also. The alloys have the finest microstructure and highest impact toughness when adding about 0.10% P and 0.9% RE into alloys. Compared with the unmodified alloy, the average size of primary silicon in the modified alloys refined from 93.5μm to 24.1μm and the impact toughness of alloys increases to 11.0062J/cm2 from 7.3572J/cm2. The excellent impact toughness of alloys can be attributed to the increase of initiation energy and expand energy of the cracks caused by the refinement of primary silicon and eutectic silicon after complex modified with P and RE.

  Info
Periodical
Advanced Materials Research (Volumes 152-153)
Edited by
Zhengyi Jiang, Jingtao Han and Xianghua Liu
Pages
1328-1332
DOI
10.4028/www.scientific.net/AMR.152-153.1328
Citation
N. C. Liu, H. D. Li, Z. X. Liu, "Influences of Complex Modification of RE and P on the Microstructure and Impact Toughness of Hypereutectic Al-24Si Alloy", Advanced Materials Research, Vols. 152-153, pp. 1328-1332, 2011
Online since
October 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: Xiang Guo Liu, Xiao Dong Peng, Wei Dong Xie, Qun Yi Wei
Abstract:In this paper, effects of strontium on Mg alloys and preparation technology of Mg-Sr and Mg-Sr-Al master alloys were summarized respectively....
31
Authors: Yong Xue, Zhi Min Zhang, Li Hui Lang, Li Li
Abstract:In the present paper a research has been made on the effect of aging on the microstructure and mechanical properties of AZ80 and ZK60 wrought...
560
Authors: Xiao Ping Luo, Lan Ting Xia, Ming Gang Zhang
Abstract:The effect of Cd and Sb addition on the microstructural and mechanical properties of as-cast AZ31 alloys was investigated and compared. The...
197
Authors: Chang Jiang Song, Yuan Yi Guo, Liang Zhu, Ke Feng Li, Min Yang, Qi Jie Zhai
Abstract:High chromium cast iron alloys are widely used to produce wear resistant components. However, formation of the large carbides restricts their...
44
Authors: Xin Nan Wang, Yue Fei, Xiao Hu Zhou, Zhi Shou Zhu, Jun Li, Guo Qiang Shang, Li Wei Zhu
Abstract:The evolution regularities of microstructure and property of a new metastable β titanium alloy with different solution treatment and aging...
932