Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第23卷    第z1期    总第1期    2013年12月

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文章编号:1004-0609(2013)S1-0292-04
TA18钛合金管材织构的表征及测定
张 晖1,刘燕平1,张旺峰2,颜孟奇2,王玉会2

(1. 西安交通大学 理学院,西安 710049;
2. 北京航空材料研究院 钛合金室,北京 100095
)

摘 要: 合金织构是决定高强薄壁TA18钛合金航空管材综合力学性能的关键因素。针对不同规格、不同工艺条件下制备加工的TA18钛合金管材,利用X射线衍射技术对其织构进行测定与分析。对于服役条件不同于其他六方晶系的TA18钛合金,不能用TC、Kearns f 和Kallstrom f等因子来对织构进行定量表征,而应采用晶体取向分布函数(ODF)的两个极密度值及管径向与最大极密度点的夹角这3个参数。确立织构表征方法为研究管材织构尤其是织构密度对力学性能的影响奠定了基础。

 

关键词: TA18钛合金;管材;织构;极图;ODF

Texture characterization in TA18(Ti-3Al-2.5V) aircraft seamless tubing
ZHANG Hui1, LIU Yan-ping1, ZHANG Wang-feng2, YAN Meng-qi2, WANG Yu-hui2

1. School of Science, Xi’an Jiaotong University, Xi’an 710049, China;
2. Department of Titanium Alloy, Beijing Institute of Aeronautical Materials, Beijing 100095, China

Abstract:Alloy texture is a key impact on mechanical properties of high strength thin-wall TA18 tubing. The textures of different specification TA18 titanium alloy tubings manufactured by different processes were investigated by means of X-ray diffraction, and texture types and intensity of tubing were characterized by the pole figure and ODF. The pole figure and various quantitative parameters exist severe shortage when representing textures. It is appropriate to describe the tubing texture that the density of peak maximums in ODF and the included angle between the radial direction and the texture component were proposed. Based on the correct method, the study of texture effects on the mechanical behavior can be pushed on.

 

Key words: TA18 Ti alloy; tubing; texture; pole figure; ODF

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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