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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)S1-0605-04
连轧速度对TC4钛合金棒材组织与性能的影响
王 田,陶海林,黄淑阳,雒水会

(宝鸡钛业股份有限公司,宝鸡 721014)

摘 要: 采用不同连轧速度在α+β两相区加热、轧制TC4钛合金小规格棒材,分析在相同轧制温度及变形量下,连轧速度对TC4钛合金棒材组织和性能的影响。结果表明:连轧速度的选择直接影响TC4棒材的组织形态和力学性能,随着轧制速度的提高,晶粒有明显的细化趋势;但当轧制速度超过某一临界轧制速度时,棒材心部会形成过热组织进而影响到棒材的力学性能;在不超过这一临界轧制速度下,形成的TC4小规格棒材组织均匀细小,综合性能优异。

 

关键词: TC4钛合金;连轧速度;组织;性能

Effect of microstructures and properties of TC4 alloy bars on continuous rolling speed
WANG Tian, TAO Hai-lin, HUANG Shu-yang, LUO Shui-hui

Baoji Titanium Industry Co., Ltd., Baoji 721014, China

Abstract:The small sizes of TC4 alloy bars were produced by the new type continuous rolling mill at different continuous rolling speeds when TC4 alloy was heated and rolled between α+β phases. The microstructures and mechanical properties of TC alloy bars were tested and analyzed when the rolling speed changed, but the rolling temperature and deformation were the same. After analyzing the effects of microstructures and mechanical properties of TC4 alloy bars at continuous rolling speed, the testing results show that the continuous rolling speed can directly affect the microstructure shapes and mechanical properties. When the rolling speed increases, the grain obviously shows the trend of much finer. When the finished bar rolling speed exceeds the critical rolling speed, the bar center part will form overheated microstructure, and the mechanical properties will be worsened accordingly. When TC4 alloy was rolled at below critical rolling speed, the small size of TC4 bar has fine, homogeneous microstructures and integrated, excellent technical properties.

 

Key words: TC4 alloy; continuous rolling speed; microstructures; properties

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

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

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