Plastic flow, microstructure evolution, and defect formation during primary hot working of titanium and titanium aluminide alloys with lamellar colony microstructures

被引：49

作者：

Semiatin, SL ^{[1
]}

Seetharaman, V

Ghosh, AK

机构：

[1] USAF, Res Lab, Mat & Mfg Directorate, AFRL,MLLM, Wright Patterson AFB, OH 45433 USA

[2] Univ Michigan, Dept Mat Sci & Engn, Ann Arbor, MI 48109 USA

[3] Universal Energy Syst Inc, Mat & Proc Div, Dayton, OH 45432 USA

来源：

PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES | 1999年 / 357卷 / 1756期

关键词：

titanium alloys; titanium aluminide alloys; constitutive behaviour; ingot breakdown; shear band formation; cavitation;

D O I：

10.1098/rsta.1999.0386

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Plastic flow response, microstructure evolution, and defect formation during the primary hot working of conventional alpha/beta titanium alloys and gamma titanium aluminide alloys with two-phase lamellar colony microstructures are reviewed. The effects of initial grain/colony size, deformation rate and temperature on constitutive behaviour and the mechanisms associated with the observed flow softening are discussed. The kinetics of dynamic globularization are summarized and interpreted in terms of measured constitutive response. Tn addition, the mechanisms underlying failure via shear localization and cavitation during breakdown metalworking operations are described.

引用

页码：1487 / 1511

页数：25