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OALib Journal期刊
ISSN: 2333-9721
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Nb/Ti比对铸造镍基高温合金长期时效组织演化的影响*
DOI: 10.3724/SP.J.1037.2014.00040, PP. 744-752
Keywords: 铸造镍基高温合金,Nb/Ti比,长期时效,组织演化
Abstract:
采用OM,SEM和TEM等手段,分析了Nb/Ti比对铸造镍基高温合金长期时效微观组织演化的影响.结果表明,在长期时效期间,Nb/Ti比对γ'相形貌演化和粗化影响不大,但对γ'相体积分数有一定影响.初生MC中Nb/Ti比和(Nb+Ti)/(W+Mo)比与合金Nb/Ti比具有很好的线性关系.随合金Nb/Ti比下降,2个比值线性下降,使MC分解程度提高,热稳定性降低;但是,2个比值的显著改变并不能导致MC分解程度的大幅变化,还存在其它因素对MC热稳定性具有重要影响.MC的分解程度可通过分解前后体积分数的变化来计算,而热稳定性强弱则可由分解程度来定量表达.Nb/Ti比降低,晶界粗化更加严重,晶界析出M23C6的倾向增大,析出M6C的倾向减小.但是,合金中m相的析出演化行为并未受到Nb/Ti比的明显影响.
| [1] | Qin X Z, Guo J T, Yuan C, Hou J S, Ye H Q. Mater Lett, 2008; 62: 258
|
| [2] | Qin X Z, Guo J T, Yuan C, Hou J S, Ye H Q. Mater Lett, 2008; 62: 2275
|
| [3] | Qin X Z, Guo J T, Yuan C, Yang G X, Zhou L Z, Ye H Q. J Mater Sci, 2009; 44: 4840
|
| [4] | Stevens R A, Flewitt P E J. Mater Sci Eng, 1979; A37: 237
|
| [5] | Choi B G, Kim I S, Kim D H, Jo C Y. Mater Sci Eng, 2008; A478: 329
|
| [6] | Lvov G, Levit V I, Kaufman M J. Metall Mater Trans, 2004; 35A: 1669
|
| [7] | Wang J, Zhou L Z, Qin X Z, Sheng L Y, Hou J S, Guo J T. Mater Sci Eng, 2012; A553: 14
|
| [8] | Qin X Z, Guo J T, Yuan C, Hou J S, Zhou L Z, Ye H Q. Acta Metall Sin, 2010; 46: 213(秦学智, 郭建亭, 袁 超, 候介山, 周兰章, 叶恒强. 金属学报, 2010; 46: 213)
|
| [9] | Ricks R, Porter A, Ecob R. Acta Metall, 1983; 31: 43
|
| [10] | Gomez-Acebo T, Navarcorena B, Castro F. J Phase Equilibria, 2004; 25: 237
|
| [11] | Japan Institute of Metals. Kinzoku Data Book. Tokyo: Maruzen, 1974: 24
|
| [12] | ISIJ. Iron and Steel Handbook, Vol.I Fundamental. 3rd Ed, Tokyo: Maruzen, 1981: 350
|
| [13] | Guo J T. Materials Science and Engineering for Superalloys, Vol.1. Beijing: Science Press, 2008: 126(郭建亭. 高温合金材料学(上册). 北京: 科学出版社, 2008: 126)
|
| [14] | Jo T S, Kim S H, Kim D G, Park J Y, Kim Y D. Metall Mater Int, 2008; 14: 739
|
| [15] | Mohammad A G, Mohsen M. Mater Des, 2011; 32: 2695
|
| [16] | Cai Y L, Zheng Y R. Acta Metall Sin, 1982; 18: 30(蔡榆林, 郑运荣. 金属学报, 1983; 18: 30)
|
| [17] | Pessah-Simonetti M, Caron P, Khan T. Superalloys. Warrendale: TMS, 1992: 567
|
| [18] | Ross E W, Sims C T. In: Sims C T, Stoloff N S, Hagel W C eds., Superalloys II, NY: Wiley, 1987: 97
|
| [19] | Pollock T M. Mater Sci Eng, 1999; B32: 255
|
| [20] | Giamei A F, Anton D L. Metall Trans, 1985; 16A: 1997
|
| [21] | Rae C M F, Karunaratne M S A, Small C J, Broomfiels C N, Jones C N, Reed R C. Superalloys. Warrendale: TMS, 2000: 767
|
| [22] | Koul A K, Castillo R. Metall Trans, 1988; 19A: 2049
|
| [23] | Qin X Z, Guo J T, Yuan C, Chen C L, Ye H Q. Metall Mater Trans, 2007; 38A: 3014
|
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