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Effects of Mechanical Vibration and Pouring Temperature on Solidified Structure of Superalloy K4169

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Abstract:

The influences of different vibration amplitude and pouring temperature on solidified structure of superalloy K4169 under the action of mechanical vibration were investigated. The vibration amplitudes and pouring temperatures used were 1.5, 1.75 and 2 mm and 1380, 1430, 1480 and 1530°C, respectively. The experimental results show that application of mechanical vibration leads to increase in grain refinement and proportion of equiaxed grains of superalloy K4169. The dendrite growth is restrained and the microstructure is changed from well-developed dendrite grains to fine equiaxed grains. Grain size of the alloy decreases as vibration amplitude increases. With the increase of the pouring temperature, grain size of the alloy increases firstly, then decreases and the turning point is 1430°C. When the pouring temperature is 1380°C, grain size of the alloy with mechanical vibration treatment is the finest.

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Periodical:

Advanced Materials Research (Volume 842)

Pages:

332-336

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.842.332

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Online since:

November 2013

Authors:

Xiao Hua Xie*, Le Ping Chen, Cheng Bo Xiao, Xin Tang

Keywords:

Mechanical Vibration, Solidified Structure, Superalloy K4169

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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