轧制对Ti600钛合金组织及性能的影响

丁群燕

doi:10.15980/j.tzzz.2017.07.027

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轧制对Ti600钛合金组织及性能的影响
Effects of Rolling on Microstructure and Mechanical Properties of Ti600Titanium Alloy
2017年37卷第7期页码：789-791
纸质出版日期： 2017 ，
DOI： 10.15980/j.tzzz.2017.07.027

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[1]丁群燕.轧制对Ti600钛合金组织及性能的影响[J].特种铸造及有色合金,2017,37(07):789-791.

Ding Qunyan. Effects of Rolling on Microstructure and Mechanical Properties of Ti600Titanium Alloy[J]. Special Casting & Nonferrous Alloys, 2017,37(7):789-791.
[1]丁群燕.轧制对Ti600钛合金组织及性能的影响[J].特种铸造及有色合金,2017,37(07):789-791. DOI： 10.15980/j.tzzz.2017.07.027.

Ding Qunyan. Effects of Rolling on Microstructure and Mechanical Properties of Ti600Titanium Alloy[J]. Special Casting & Nonferrous Alloys, 2017,37(7):789-791. DOI： 10.15980/j.tzzz.2017.07.027.

摘要

研究了三辊轧制对航空发动机用Ti600钛合金组织及性能的影响。结果表明

三辊轧制后横向板材的组织β相和α相相继发生了再结晶而生成了等轴的α+β共晶组织

轧后板材的晶粒得到了一定程度的细化

均匀性也得到较好的改善。板材纵向组织主要由初生α相、次生α相和β相基体组成。轧制后钛合金板材的力学性能得到提高

尤其是横向方面增加很明显试样

横向室温力学性能的增加幅度均在15%以上。钛合金断口均具有撕裂棱、韧窝

属于准解理断裂。韧窝主要集中在晶界处

其中以片层团与α相之间的晶界处较多。

Abstract

The effects of rolling on microstructure and mechanical properties of Ti600 titanium alloy for engine were investigated by using microstructure observation and tensile testing.The results show that theβandαphase in microstructure of transverse blank after the three-roll rolling form the equaxialα+βas a result of recrystallization.The grain size is refined with improvement of uniformity after rolling.The longitudinal structure of the blank is mainly composed of primaryα

secondaryαandβphase matrix.The hardness and mechanical properties of titanium alloy plate are increased after rolling

especially transverse direction

where increase of mechanical properties at room temperature are more than15%.Fracture morphology of titanium alloy was characterized by quasi-cleavage fracture with torn edges and dimples.Dimples are generated mainly in grain boundary

especially in lamella regiment and the grain boundary betweenαphase.