INFLUENCE OF Ru AND Cr ON SOLIDIFICATION PROCESS IN A Re-FREE Ni-BASED SINGLE CRYSTAL SUPERALLOY
Revised date: 2014-03-28
Online published: 2014-09-25
Supported by
Supported by National Natural Science Foundation of China (Nos.U1037601 and 51271186) and National Basic Research Program of China (No.2010CB631206)
The effect of addition of Ru and change of Cr content on solidification behaviors are systematically investigated in a Re-free Ni-based single crystal superalloy with a fixed mass fraction additions of Ru and Cr, with the use of DTA, OM, SEM and EPMA. The results show that the addition of Ru can increase the eutectic fraction, facilitate the formation of Ru-rich phase which would increase largely at the time of Ru and Cr addition synchronously. Ru addition can promotes W segregate to the dendrite arm, and inhibits Mo to segregate to the interdendritic region. The increasement of Cr addition can decrease the segregation ratio of W, but have little effect on Mo. The combination of Ru and Cr influences the solidification microstructures and segregation behaviors corporately, and thus influences heat treatment processes and the microstructure stability.
Yinping LUO , Yizhou ZHOU , Jinlai LIU . INFLUENCE OF Ru AND Cr ON SOLIDIFICATION PROCESS IN A Re-FREE Ni-BASED SINGLE CRYSTAL SUPERALLOY[J]. Acta Metall Sin, 2014 , 50(9) : 1025 -1030 . DOI: 10.11900/0412.1961.2014.00148
| [1] | Collins H E. Metall Trans, 1974; 6: 189 |
| [2] | Giamei A F, Anton D L. Metall Trans, 1985; 16A: 1997 |
| [3] | Epishin A, Link T. In: Green K A, Pollock T M, Harada H, Howson T E, Reed R C, Schirra J J, Walston S eds., Superalloys 2004, Warrendale: TMS, 2004: 137 |
| [4] | Austin C M, Darolia R, O'Hara K S, Ross E. US Pat, 5151249, 1992 |
| [5] | Rae C M F, Karunaratne M S A, Small C J, Broomfield R W, Jones C N, Reed R C.In: Pollock T M, Kissinger R D, Bowman R R, Green K A, McLean M, Olson S L, Schirra J J eds., Superalloys 2000, Warrendale: TMS, 2000: 767 |
| [6] | Rae C M F, Reed R C. Acta Mater, 2001; 49: 4113 |
| [7] | Tin S, Pollock T M. Mater Sci Eng, 2003; A348: 111 |
| [8] | Murakami H, Honma T, Koizumi Y, Harada H. In: Pollock T M, Kissinger R D, Bowman R R, Green K A, McLean M, Olson S L, Schirra J J eds., Superalloys 2000, Warrendale: TMS, 2000: 747 |
| [9] | Lavigne O, Ramusat C, Drawin S, Caron P, Boivin D, Pouchou J L. In: Green K A, Pollock T M, Harada H, Howson T E, Reed R C, Schirra J J, Walston S eds., Superalloys 2004, Warrendale: TMS, 2004: 667 |
| [10] | Yeh A C, Rae C M F, Tin S. In: Green K A, Pollock T M, Harada H, Howson T E, Reed R C, Schirra J J, Walston S eds., Superalloys 2004, Warrendale: TMS, 2004: 677 |
| [11] | O’Hara K S, Walton W S, Ross E W, Darolia R. US Pat, 5482789, 1996 |
| [12] | Heckl A, Neumeier S, Cenanovic S, Goken M, Singer R F. Acta Mater, 2011; 59: 6563 |
| [13] | Sato A, Harada H, Yokokawa T, Murakumo T, Koizumi Y, Kobayashi T, Imai H. Scr Mater, 2006; 54: 1679 |
| [14] | Hobbs R A, Zhang L, Rae C M F, Tin S. Metall Mater Trans, 2008; 39A: 1014 |
| [15] | Epishin A, Link T, Brückner U, Fedelich B, Portella P. In: Green K A, Pollock T M, Harada H, Howson T E, Reed R C, Schirra J J, Walston S eds., Superalloys 2004, Warrendale: TMS, 2004: 537 |
| [16] | Harris K, Erickson G L, Sikkenga S L, Brentnall W D, Aurrecoechea J M, Kubarych K G. In: Antolovich S D, Stusrud R W, Mackay R A, Anton D L, Khan T, Kissinger R D, Klarstrom D L eds., Superalloys 1992, Warrendale: TMS, 1992: 287 |
| [17] | Carroll L J, Feng Q, Mansfield J F, Pollock T M. Mater Sci Eng, 2007; A457: 292 |
| [18] | Caldwell E C, Fela F J, Fuchs G E. In: Green K A, Pollock T M, Harada H, Howson T E, Reed R C, Schirra J J, Walston S eds., Superalloys 2004, Warrendale: TMS, 2004: 811 |
| [19] | Caron P, Khan T. Aerospace Sci Technol, 1999; 3: 513 |
| [20] | Liu J L, Jin T, Zhang J H, Hu Z Q. Acta Metall Sin, 2001; 37: 1233 |
| [20] | (刘金来, 金 涛, 张静华, 胡壮麒. 金属学报, 2001; 37: 1233) |
| [21] | Liu L R, Jin T, Zhao N R, Wang Z H, Sun X F, Guan H R, Hu Z Q. Acta Metall Sin, 2004; 40: 858 |
| [21] | (刘丽荣, 金 涛, 赵乃仁, 王志辉, 孙晓峰, 管恒荣, 胡壮麒. 金属学报, 2004; 40: 858) |
| [22] | Caldwell E C, Fela F J, Fuchs G E. JOM, 2004; 56: 44 |
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