Influences of solution cooling rate on microstructural evolution of a multiphase Ni3Al-based intermetallic alloy
作者： Jing Wu , Chong Li , Yongchang Liu , Xingchuan Xia , Yuting Wu
DOI: 10.1016/J.INTERMET.2019.03.010
关键词:
摘要: Abstract In present work, a multiphase Ni3Al-based intermetallic alloy with complex components of γ'+γ dendrite comprising extremely high volume fraction (81 vol %) γ′ phase and interdendritic β is investigated, the microstructure evolution transformation behavior tailored by different solution cooling rates are studied applying methods water (WC, 138 °C/s), air (AC, 72 °C/s), furnace (FC, 0.05 °C/s) after treatment at 1200 °C for 10 h. Results show that cubic degree, size cuboidal primary as well spherical secondary particles in improved decreasing rates, average sizes found to meet logarithmic relationships rates. There three kinds precipitates resulted from methods, i.e., rod-like Cr3C2 carbides, semi-spherical α-Cr particles, long acicular precipitates. The lower rate decreases number increases promotes formation β-matrix. play role pinning dislocations β-matrix have orientation relationship [‾110]α-Cr//[‾110]β-matrix. addition, precipitation observed accomplish two sequential stages grow an onion-like ordered way. Stacking faults existed partial due nanotwins Microtwins cooling, which bimodal configuration microtwinning boundaries interior stacking faults. Besides, γ′-envelope formed between dependent on processes.
sci-hub.se 参考文章(38)
S.A. David, C.T. Liu, W.A. Jemian, J.A. Horton, Welding and weldability of nickel-iron aluminides Weld. J. (Miami); (United States). ,vol. 64, ,(1985)
Pawel Jozwik, Wojciech Polkowski, Zbigniew Bojar, Applications of Ni3Al Based Intermetallic Alloys—Current Stage and Potential Perceptivities Materials. ,vol. 8, pp. 2537- 2568 ,(2015) , 10.3390/MA8052537
Roger C. Reed, The Superalloys: Fundamentals and Applications ,(2008)
V.K. Sikka, S.C. Deevi, S. Viswanathan, R.W. Swindeman, M.L. Santella, Advances in processing of Ni3Al-based intermetallics and applications Intermetallics. ,vol. 8, pp. 1329- 1337 ,(2000) , 10.1016/S0966-9795(00)00078-9
Kyoko Kawagishi, An-Chou Yeh, Tadaharu Yokokawa, Toshiharu Kobayashi, Yutaka Koizumi, Hiroshi Harada, Development of an Oxidation-Resistant High-Strength Sixth-Generation Single-Crystal Superalloy TMS-238 Superalloys. pp. 189- 195 ,(2012) , 10.1002/9781118516430.CH21
Yun-Jiang Wang, Koichi Tsuchiya, L.H. Dai, Size-dependent plastic deformation and failure mechanisms of nanotwinned Ni3Al: insights from an atomistic cracking model Materials Science and Engineering A-structural Materials Properties Microstructure and Processing. ,vol. 649, pp. 449- 460 ,(2016) , 10.1016/J.MSEA.2015.10.006
Shengkai Gong, Dongbo Zhang, Huibin Xu, Yafang Han, Thermal barrier coatings with two layer bond coat on intermetallic compound Ni3Al based alloy Intermetallics. ,vol. 13, pp. 295- 299 ,(2005) , 10.1016/J.INTERMET.2004.07.021
Y. Yuan, Y.F. Gu, T. Osada, Z.H. Zhong, T. Yokokawa, H. Harada, A new method to strengthen turbine disc superalloys at service temperatures Scripta Materialia. ,vol. 66, pp. 884- 889 ,(2012) , 10.1016/J.SCRIPTAMAT.2012.01.025
A. Sato, A.-C. Yeh, T. Kobayashi, T. Yokokawa, H. Harada, T. Murakumo, J. X. Zhang, Fifth generation Ni based single crystal superalloy with superior elevated temperature properties Energy Materials. ,vol. 2, pp. 19- 25 ,(2007) , 10.1179/174892407X205254
L.Y. Sheng, Y. Xie, T.F. Xi, J.T. Guo, Y.F. Zheng, H.Q. Ye, Microstructure characteristics and compressive properties of NiAl-based multiphase alloy during heat treatments Materials Science and Engineering A-structural Materials Properties Microstructure and Processing. ,vol. 528, pp. 8324- 8331 ,(2011) , 10.1016/J.MSEA.2011.07.072