Effect of boron addition on formation of a fine-grained microstructure in commercially pure titanium processed by hot compression

被引：17

作者：

Imayev, V. M. ^{[1
]}

Gaisin, R. A. ^{[1
]}

Imayev, R. M. ^{[1
]}

机构：

[1] Russian Acad Sci, Inst Met Superplast Problems, Ufa 450001, Russia

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2015年 / 639卷

关键词：

Titanium alloys; Boron; Microstructure; Recrystallization; Electron backscatter diffraction; MECHANICAL-PROPERTIES; ALLOY TI-6AL-4V-0.1B; PURITY TITANIUM; DEFORMATION; TEMPERATURE; REFINEMENT; EVOLUTION;

D O I：

10.1016/j.msea.2015.05.082

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

This paper is devoted to comparative investigation of recrystallization behavior during uniaxial hot compression at 600-900 degrees C of cast commercially pure titanium (CP-Ti) modified with boron and free of boron as well as of CP-Ti in initial wrought condition. Using optical microscopy and EBSD analysis it has been revealed that the boron addition in an amount of 0.2 wt'% promoted much more uniform strain development and intensive dynamic recrystallization during hot compression in cast CP-Ti modified with boron as compared with cast CP-Ti free of boron. At the same time, hot compression led to similar fine-grained microstructures in cast CP-Ti modified with boron and wrought CP-Ti. The obtained results suggest that the boron additions to CP-Ti may reduce postcast processing steps and thus reduce the overall cost of produced fine-grained materials out of CP-Ti by means of hot working. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：691 / 698

页数：8

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