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率与过冷度之间的关系,经过分析发现,层片状共晶的层片间距大小并不是一特定值,而是存在一定间距范围.KIM[21]通过对TiAl合金的研究发现层片间距与冷却速度有关并随冷却速度的增加而减小. 本实验中采用定量金相法利用500倍视场的金相照片,通过大量统计测量得出不同下拉速率下层片间距的平均大小,并建立平均层片间距与下拉速率间关系式.每个数据点为300次测量的平均值.具体结果如表1所列.从表1中可以看......
attracted much attention for their unique properties with the prospect of various potential applications [7-9]. Porous intermetallics such as TiAl, FeAl, and NiAl have been fabricated by sintering......
on Ti-6Al-4V[J]. Tribology Transactions, 1993, 36: 113-119. [7] 彭小敏, 夏长清, 王志辉,黄 珍, 王金惠. TiAl基合金高温氧化及防护的研究进展[J]. 中国有色金属学报, 2010, 20(6): 1116-1130. PENG Xiao-min, XIA Chang-qing, WANG Zhi-hui, HUANG Zhen, WANG Jin-hui. Development of high temperature oxidationand protection of TiAl-based alloy[J]. The Chinese Journal of Nonferrous Metals, 2010, 20(6): 1116-1130. [8] de BARROS M I, RATS D, VANDENBULCKE......
and tensile properties of containerless near-isothermally forged TiAl alloys[J]. Transactions of Nonferrous Metals Society of China,2011, 21(12): 2605-2609. [14] WEISS I, SEMIATIN S L. Thermomechanical......
, SHI X, ZHAI W, YAO J, SONG S, ZHANG Q. Preparation and tribological properties of TiAl matrix composites reinforced by multilayer graphene [J]. Carbon, 2014, 67: 168-177. [15] SHIN Y J, STROMBERG R, NAY......
:Cr-Al-Si-O-N;电弧离子镀;氧含量;组织结构;力学性能;高温摩擦 中图分类号:TG115 文献标志码:A MeSiN(nc-MeN/a-Si3N4, Me=Ti, Cr, W, TiAl, CrAl等)是典型的纳米复合结构涂层,这种涂层具有超高硬度(>40 GPa......
]. Electrochimica Acta, 2006, 51(8): 1752- 1760. [27] LIAO Cui-jiao, HE Yue-hui, YANG Jun-sheng, NAN Bo, LIU Xin-li. Effect of carburization on electrochemical corrosion behaviours of TiAl alloy [J......
Xiang-yi, TANG Bin, KOU Hong-chao, LI Jin-shan. Flow characteristics and constitutive modeling for elevated temperature deformation of a high Nb containing TiAl alloy [J]. Intermetallics, 2014; 49......
Yao, DONG Hong-xing, TANG Lie-min, HE Yue-hui, HUANG Bai-yun. Environmental corrosion resistance of porous TiAl intermetallic compounds [J]. Transactions of Nonferrous Metals Society of China, 2009......
(rotating electrode process) atomization mechanisms [J]. Powder Metall Int, 1984, 16: 125-128. [20] YANG D Y, GUO S, PENG H X, CAO F Y, LIU N, SUN J F. Size dependent phase transformation in atomized TiAl......