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Microstructure and dislocation structure evolution during creep life of Ni-based single crystal superalloysHao Yua1,Wei Xu1,2,Sybrand van der Zwaag11. Novel Aerospace Materials Group, Faculty... single crystal superalloys during high temperature low stress creep service, is intrinsically determined by the combined effects of microstructural evolution and the dislocation behaviour. In the field......
Zhonggang1 (1.Shenyang Liming Aero-engine Corporation, AVIC I, Shenyang 110043, China) 摘要:By means of pre-compressive creep treatment, the cubic γ'' phase in a nickel base single crystal superalloy...:nickel-base single crystal superalloy; P-type and N-type structure; creep; activation energy; deformation features; [全文内容正在添加中] ......
一种镍基单晶高温合金的高温度梯度定向凝固组织及枝晶偏析刘刚1,刘林1,赵新宝1,张卫国1,金涛2,张军1,傅恒志2(1.陕西省西安市西北工业大学凝固技术国家重点实验室2.中国科学院 金属研究所,沈阳 110016)摘 要:采用双区加热和液态金属冷却法(LMC)相结合,对一种含4%Re(质量分数)的镍基单晶高温合金进行了高温度梯度定向凝固.结果表明:与传统的"高速凝固法(HRS)"(温度梯度G=20-40 K/cm,抽拉速率V=50-100μm/s,一次枝晶间距λ1=200-400μm)相比,该技术可以显著提高凝......
to the formation of TCP phases. It is indicated that the addition of Ru to the Ni-based single crystal superalloy with high content of the refractory alloying element can enhance phase stability... and phase stability of the single crystal superalloy were investigated. γ′ directional coarsening and rafting were observed in the Ru-free alloy and Ru-containing alloy after long-term aging at 1070?C......
-NiMo phase; Ni3Al based single crystal superalloy 1 Introduction Single crystal superalloys possess important applications in gas turbine blades and vanes due to their excellent elevated temperature... region. 2 Experimental A Ni3Al-based single crystal superalloy, IC21, was used in the present study with the nominal composition of Ni-(8-9)Al-(10-13)Mo-(1-2)Re (mass fraction, %). The master alloy......
crystal nickel-based superalloy; microstructure stability; creep; aging; topologically-closed-packed phase 1 Introduction Single crystal nickel based superalloy is one of the used materials...] SIMONETTI M, CARON P. Role and behaviour of μ? phase during deformation of a nickel based single crystal superalloy [J]. Mater Sci Eng A, 1998, A254: 1-12. [11] DAROLIA R, LAHRMAN D F, FIELD R D......
orientations on dendrite morphologies in a Ni-base SC superalloy[J]. J Materials Engineering, 1994(2): 1-3. (in Chinese) [17] MERIC L, POUBANNE P, CAILLETAND G. Single crystal modeling for structural... of a Ni base single crystal superalloy[J]. Acta Metallurgica Sinica, 2001, 37(12): 1233-1237. (in Chinese) (Edited by YUAN Sai-qian) Corresponding author: HAN Ya-fang; Tel: +86-10-82314488; E-mail......
A review of composition evolution in Ni-based single crystal superalloysWanshun Xia1,Xinbao Zhao1,Liang Yue1,Ze Zhang21. Institute of Superalloys Science and Technology, School of Materials Science... crystal superalloys(Ni-SXs) are extensively applied in modern aero-engine and industrial gas turbine. Apart from the special single crystal structure which is disadvantageous to extension of creep......
="ChDivSummary">The recrystallization behavior of a single crystal nickel-base superalloy was investigated by shot peening and subsequent annealing. Two kinds of recrystallization microstructures...Surface recrystallization of a single crystal nickel-base superalloyJie Meng1), Tao Jin1,2), Xiao-feng Sun1), and Zhuang-qi Hu1) 1) Department of Superalloys, Institutes of Metal Research, Chinese......
in the corresponding direction; the effect of disorientation on tensile properties at 950 ℃ is not as obvious as that at RT for activation of additional slip systems. Key words: Ni-based single crystal... Engineering, 2002, 26(4): 6-10. [8] KAKEHI K. Effect of plastic anisotropy on tensile strength of single crystals of a Ni-based superalloy[J]. Scripta Mater, 2000, 4: 2197-202. [9] SHAH D M, DUHL D N......