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键词:TC21钛合金;片层组织特征;断裂韧度 中图分类号:TG 146 文献标志码:A Influence of lamellar microstructure feature on fracture toughness of TC21 alloy DANG Wei1, XUE Xiang-yi1, LI Jin-shan1, HU... the relationship between lamellar microstructure feature (thickness of α laths, width of α lath at grain boundary and α colony size) and fracture toughness, the microstructures and fracture toughness of TC21 alloy......
aged-heat treatment. The results show that Ti-47Al-2Cr-2Nb-0.15B alloy is extruded in 1 330 ℃ and the deformed near full lamellar (NFL) microstructure is obtained. Full lamellar (FL) microstructure... and melt and the γ lamellar is thickened. Key words: TiAl; aged-heat treatment; microstructure; lamellar γ-TiAl 合金密度低,比强度和比模量高,具有较好的抗氧化性和较高的蠕变抗力,在航空航天和汽车等应用领域具有很大的应用前景,近年来受到研究者的广泛重视[1-3].作为高温应用材料的TiAl合金......
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Trans. Nonferrous Met. Soc. China 28(2018) 2440-2448 Microstructure-fracture toughness relationships and toughening mechanism of TC21 titanium alloy with lamellar microstructure Zhi-feng SHI1,2, Hong... 2017; accepted 17 May 2018 Abstract: The independent influence of microstructural features on fracture toughness of TC21 alloy with lamellar microstructure was investigated. Triple heat treatments......
Superplasticity-like creep behavior of coarse grained ternary Al alloys QIAO Jun(乔 军)1, E. M. TALEFF 2 1. College of Materials Science and Engineering, University of Science... in coarse grained Al-Mg-Zn and Al-Mg-Fe materials were studied. The materials were Al-2Mg-5Zn, Al-3Mg-5Zn, Al-4Mg-5Zn, Al-3Mg-0.11Fe, Al-3Mg-0.27Fe, and Al-3Mg-0.40Fe. Tensile elongation-to-failure tests......
Fabrication of textured Ti2AlC lamellar composites with improved mechanical propertiesXi Xie1,2,Rui Yang1,2,Yuyou Cui1,2,Qing Jia1,2,Chunguang Bai1,21. School of Materials Science and Engineering, University of Science and Technology of China2. Institute of Metal Research, Chinese Academy of Sciences摘 要:Textured Ti2AlC lamellar composites have been......
with lamellar α+β starting structure using processing map [J]. Materials and Design, 2009, 30: 1625-1631. [11] POORGANJI B, YAMAGUCHI M, ITSUMI Y, MATSUMOTO K. Microstructure evolution during deformation...J. Cent. South Univ. Technol. (2011) 18: 296-302 DOI: 10.1007/s11771-011-0694-6 Hot deformation behavior of Ti-6.5Al-3.5Mo-1.5Zr-0.3Si alloy with acicular microstructure LIU Gao-feng(刘高峰)1, ZHANG......
of the casting during solidification period, and the solidification time of the casting is greater than that without vacuum. The microstructure of LFC magnesium alloy is rather coarse. Compared... magnesium alloy is much coarse, disconnected netted β(Mg17Al12) phase distributes along grain boundary of α-Mg matrix. There are two types of β phase in the microstructure: the white one......
; Abstract: The average lamellar spacing and interface undercooling in steady-state irregular eutectic growth were estimated based on the Jackson and Hunt’s analysis by relaxing the isothermal interface assumption. At low growth rates, the average lamellar spacing and average interface......
A NUMERICAL MODEL OF LAMELLAR SPACING OF Al-Si EUTECTIC L.Xiao1,W.Q.Zhang1 (1.School of Mechanical Engineering,Liaoning Technical University,Fuxin 123000,China) Abstract:A numerical model... growth rate causes an in-crease of undercooling but a decrease of lamellar spacing,while increasing temperaturegradient leads to a decrease of lamellar spacing.The computed results......