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. Microsegregation in high Nb containing TiAl alloy ingots beyond laboratory scale [J]. Intermetallics, 2007, 15(5-6): 625-631. [13] HUANG L, LIAW P K, LIU C T. Microstructural control of Ti-Al-Nb-W-B... of the large ingot through mass production of the TiAl-based alloy was largely improved by the alloy design and subsequent heat treatments. Key words: TiAl intermetallics; W; B; tensile ductility......
Chu-bin, ZHANG Jun, LIU Lin. Influence of crystal orientation on microstructure properties and its control for nickel-base single crystal superalloys[J]. Materials China, 2013, 32(1): 24-37. [17] ZHOU...温度梯度,而且热流的方向和晶体生长的方向比较一致.从图3(c),(e),(g)中可以看到,柱状晶粒分别在部分区域处发生合并生长,使得晶粒粗化,在部分区域处晶粒被淘汰[19]. 图5 定向凝固组织涂层形成机理示意图 Fig. 5 Formation mechanism of coating of directional solidification......
. [7] JUNG I S, JANG H S, OH M H, LEE J H, WEE D M. Microstructure control of TiAl alloys containing beta stabilizers by directional solidification [J]. Materials Science and Engineering A, 2002, 329... and control of heat treatment procedures. Table 1 Crystal data for Ti-Al-X system Fig. 1 Crystal structures of phases in B2-contaned TiAl alloy [3] The thorough assessment of the binary Ti-Al phase......
nucleation of grain is formed in the liquid phase. Then, the priority growth direction is in <100> crystal orientation in the solidification process for the cubic metals. At last, the Kurz-Giovanola... 2522, Australia Central South University Press and Springer-Verlag Berlin Heidelberg 2016 Abstract: Solidification structure is critical in the control of the mechanical properties and quality during......
phases during the eutectic growth. Key words: NiAl-9Mo; directional solidification; intermetallics; crystal growth; microstructure 1 Introduction Alloys based on the intermetallic compound NiAl have...Trans. Nonferrous Met. Soc. China 23(2013) 3499-3507 Directional solidification and characterization of NiAl-9Mo eutectic alloy Jian-fei ZHANG1,2, Jun SHEN1, Zhao SHANG1, Lei WANG1, Heng-zhi FU1 1......
Relationship between crystal growth mode, preferred orientation and magnetostriction of (Tb0.3Dy0.7)Fe1.95 alloys张世荣,李扩社,于敦波,李勇胜,杨红川,李红卫,涂赣峰摘 要:The relationship between crystal growth mode, preferred orientation and magnetostrictive properties of (Tb0.3Dy0.7)Fe1.95 alloys was investigated at different directional solidification rates. The results showed......
inversely with the wheel speed. The nanohardness increases with increasing cooling rate due to the grain size strength.Key words:rapid solidification; microstructure; cooling rate; TiAl intermetallics...Microstructure and nanohardness of Ti-48%Al alloy prepared by rapid solidification under different cooling ratesWANG Hong-wei1, 2, ZHU Dong-dong1, ZOU Chun-ming1, WEI Zun-jie1(1. School of Materials......
the other applied TiAl-based alloys in previous studies. Key words: TiAl alloy; directional solidification; growth rate; diameter; phase transition 1 Introduction TiAl-based alloys are highly promising...-additional TiAl alloys. Directional solidification is an appropriate technique to research solidification behavior of alloy under defined solidification conditions [17]. The solidification parameters......
Heng-zhi, GUO Jing-jie, SU Yan-qing, LIU Lin, XU Da-ming, LI Jin-shan. Directional solidification and lamellar orientation control of TiAl intermetallics[J]. The Chinese Journal of Nonferrous Metals...-solidification process at withdrawal rates of 20, 100 and 200 μm/s. The results show that the columnar grain growth is observed in the DS specimens. The preferred crystal orientation of NiTi matrix......
Modes of Grain Selection in Spiral Selector during Directional Solidification of Nickel-base SuperalloysXiangbin Meng 1,2),Qi Lu 1,2),Jinguo Li 1),Tao Jin 1),Xiaofeng Sun 1),Jun Zhang 3),Zhongqiang... optimize the orientation of the selected single crystal when the initial angle is large enough,and the single crystal selection in spiral parts with different pitch lengths and initial angles......