Statistical Study of the Effects of the Composition on the Oxidation Resistance of Ni-Based Superalloys

被引:25
作者
Park, Si-Jun [1 ]
Seo, Seong-Moon [2 ]
Yoo, Young-Soo [2 ]
Jeong, Hi-Won [2 ]
Jang, HeeJin [3 ]
机构
[1] Chosun Univ, Dept Energy Convergence, Gwangju 501759, South Korea
[2] Korea Inst Mat Sci, High Temp Mat Grp, Chang Won 642831, South Korea
[3] Chosun Univ, Dept Mat Sci & Engn, Gwangju 501759, South Korea
关键词
HIGH-TEMPERATURE OXIDATION; OXIDE SCALE; CR; ALLOYS; VOLATILIZATION; OPTIMIZATION; ALUMINIDE; EVOLUTION; KINETICS; MODEL;
D O I
10.1155/2015/929546
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
The effects of alloying elements (Co, Cr, Mo, W, Al, Ti, and Ta) on the oxidation resistance of Ni-based superalloys are studied using the Response Surface Methodology (RSM). The statistical analysis showed that Al and Ta generally improve the oxidation resistance of the alloy, whereas Ti and Mo degrade the oxidation resistance. Co, Cr, and W did not alter oxidation rate significantly when examined by the mass gain averaged for all model alloys. However, it is remarkable that the degree of the effects of alloying elements varied with the concentration of other elements. Further, the effect of each element was sometimes found to be reversed for alloy groups specified by the concentration of another element.
引用
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页数:11
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