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temperature of the mold, are suggested for the manufacture of permanent mold centrifugal cast TiAl exhaust valves. Key words: TiAl alloy; exhaust valve; permanent mold; mathematical model; off-center... in the research on titanium aluminides, in particular, on the TiAl compounds[1-3]. The low density combined with the high-strength at high temperature make titanium aluminide alloy an excellent......
；drop casting；铸造；淬火；b(B2)相；片层组织；晶粒 中图分类号:TF125.2; TG113.12 Revolution of microstructure of as-cast TiAl alloy HUANG Jin-song, LIU Bing, ZHANG Wei, ZHANG Yong-hong, LIU Yong, HE Yue-hui, HUANG Bai... words: TiAl alloy; magnetic levitation; drop casting; cast; quenching; b(B2) phase; lamellar structure; grain ......
, 1992, 48(11): 939-946. [3] YAN Yun-qi, ZHANG Zhen-qi, LUO Guo-zhen, et al. Microstructures observation and hot compressing tests of TiAl based alloy containing high Nb[J]. Materials Science... mechanism in high Nb containing TiAl alloy by elemental powder metallurgy[J]. Transactions of Nonferrous Metals Society of China, 2006, 16: 853-857. (编辑 赵 俊) 收稿日期:2013-07-28；修订日期:2013-10-10......
and Materials, University of Science and Technology Beijing, Beijing 100083, China) Abstract: TiAl Ingots containing high contents of alloy elements(7Nb-2.5V-1.0Cr) were prepared by magnetic levitation...文章编号:1004-0609(2013)S1-s0771-05 Al和B含量对高温TiAl合金室温力学性能的影响 张志勇,马 睿,徐向俊,张来启,林均品 (北京科技大学 新金属材料国家重点实验室,北京 100083) 摘 要:采用磁感应悬浮熔炼法制备3个含有高含量合金元素(7Nb-2.5V-1.0Cr)的TiAl合金铸锭,Al和B的含量分别为......
: TiAl alloy; investment casting; interface reaction; oxidation resistance TiAl合金具有密度低,比强度高,蠕变抗性高和耐高温氧化性能好等优点,在航空航天领域具有广阔的应用前景[1-3].但是其室温塑性不足,850 ℃以上耐高温氧化能力不足,阻碍了TiAl合金的实用化进程.添加合金化元素在TiAl合金性能的改善中具有广泛的应用,如... Chang-qing, WANG Zhi-hui, HUANG Zhen, WANG Jin-hui. Development of high temperature oxidation and protection of TiAl-based alloy[J]. The Chinese Journal of Nonferrous Metals, 2010, 20(6): 1116-1130. [6......
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resistance of porous TiAl intermetallic compound was investigated. The kinetic equation for the cyclic oxidation of porous TiAl alloy at 600 ℃ is determined to be Δm2=1.08×10-5t. After total oxidation of 140 h, porous TiAl intermetallic compound shows more stability of pore structure and the mass gain of TiAl alloy is 0.042 g/m2, which is only 10.6% that of porous 316L stainless steel......
TiAl合金板材的制备及研究现状 肖树龙1,陈玉勇1,杨非1,孔凡涛1 (1.哈尔滨工业大学,材料科学与工程学院,哈尔滨,150001) 摘要:本文综述了铸锭冶金和粉末冶金方法制备TiAl合金板材的工艺和国内外研究现状,介绍了铸轧技术,流延成形以及物理气相沉积等方法制备TiAl合金板材的工艺过程和材料性能,论述了上述方法的特点和发展趋势. 关键词:TiAl合金板材; 铸锭冶金; 粉末冶金; 发展趋势; [全文内容正在添加中] ......
: two-phase TiAl alloy; Al2O3; in situ reaction; microstructure; mechanical property; toughening mechanism .... Relationships of slip morphology, microcracking, and fracture resistance in a lamellar TiAl-alloy[J]. Metallurgical and Materials Transactions A, 1994, 25A(6): 1217?1228. [7] Kwai C S, Donald S S. Fatigue......
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