文章信息/Info

Title:

Effect of Rolling Temperature on Microstructure and Properties of Ti650 High Temperature Titanium Alloy Bar

文章編號(hào):

1674-3962(2026)01-0058-08

作者:

錢坤; 張國(guó)君; 王曉; 辛社偉; 周偉; 侯紅苗

1. 西安理工大學(xué)材料科學(xué)與工程學(xué)院，陜西 西安 710048 2. 西北有色金屬研究院，陜西 西安 710016

Author(s):

QIAN Kun;  ZHANG Guojun;  WANG Xiao;  XIN Shewen;  ZHOU Wei;  HOU Hongmiao

1. School of Materials Science and Engineering, Xi’an University of Technology, Xi’an 710048, China 2. Northwest Institute for Nonferrous Metal Research, Xi’an 710016, China

關(guān)鍵詞:

Ti650鈦合金; 顯微組織; 織構(gòu); 拉伸性能; 高溫蠕變

Keywords:

Ti650 titanium alloy;  microstructure;  texture;  tensile properties;  high temperature creep

分類號(hào):

TG146.23；TG339

DOI:

10.7502/j.issn.1674-3962.202406012

文獻(xiàn)標(biāo)志碼:

A

摘要:

研究了軋制溫度對(duì)Ti650合金拉伸及蠕變性能的影響。采用光學(xué)顯微鏡分析了不同軋制溫度對(duì)合金等軸α相及次生α相形貌、含量的影響；使用EBSD分析技術(shù)對(duì)軋制后的合金的晶體取向進(jìn)行表征。結(jié)果表明：隨著軋制溫度的升高，Ti650合金強(qiáng)度逐漸增加，塑性變化不大；初生α相、次生α相、織構(gòu)等均會(huì)對(duì)Ti650合金拉伸性能產(chǎn)生影響；Ti650合金的高溫蠕變性能與軋制溫度升高導(dǎo)致的初生α相含量和尺寸及次生α相片層厚度有關(guān)，隨著軋制溫度升高蠕變殘余應(yīng)變表現(xiàn)出先降低后升高的趨勢(shì)，在1000 ℃軋制時(shí)抗蠕變性能最佳。

Abstract:

The effect of rolling temperature on the tensile and creep properties of Ti650 alloy was studied. The effects of different rolling temperatures on the morphology and content of equiaxed α phase and secondary α phase were analyzed by optical microscope. EBSD analysis technique was used to characterize the crystal orientation of Ti650 alloy after rolling. The results show that with the increase of rolling temperature, the strength of Ti650 alloy increases gradually, and the plasticity changes little. Primary α phase, secondary α phase and texture all affect the tensile properties of Ti650 alloy. The high temperature creep properties of Ti650 alloy are related to the content and size of primary α phase and the thickness of secondary α phase lamellar. The residual creep strain shows a trend of increasing first and then decreasing with the increase of rolling temperature, and the creep performance is the best when rolling at 1000 ℃．