新聞資訊
TA18鈦合金管材織構的表征及測定
發布人：上海艾荔艾金屬材料有限公司www.jshcn.cn
更新時間：2015-08-31
合金織構是決定高強薄壁TA18鈦合金航空管材綜合力學性能的關鍵因素。針對不同規格、不同工藝條件下制備加工的TA18鈦合金管材，利用X射線衍射技術對其織構進行測定與分析。
TA18鈦合金管材織構的表征及測定Texture characterization in TA18(Ti-3Al-2.5V) aircraft
seamless tubing
合金織構是決定高強薄壁TA18鈦合金航空管材綜合力學性能的關鍵因素。針對不同規格、不同工藝條件下制備加工的TA18鈦合金管材，利用X射線衍射技術對其織構進行測定與分析。對于服役條件不同于其他六方晶系的TA18鈦合金，不能用TC、Kearns
f 和Kallstrom
f等因子來對織構進行定量表征，而應采用晶體取向分布函數(ODF)的兩個極密度值及管徑向與最大極密度點的夾角這3個參數。確立織構表征方法為研究管材織構尤其是織構密度對力學性能的影響奠定了基礎。
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.
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