Effect of heat treatment on corrosion behavior of Ti-6Al-4V alloy weldments

被引：47

作者：

Karimzadeh, F. ^{[1
]}

Heidarbeigy, M. ^{[1
]}

Saatchi, A. ^{[1
]}

机构：

[1] Isfahan Univ Technol, Dept Mat Engn, Esfahan 8415683111, Iran

来源：

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY | 2008年 / 206卷 / 1-3期

关键词：

corrosion heat treatment; Ti-6Al-4V alloy; welding;

D O I：

10.1016/j.jmatprotec.2007.12.065

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

in this study, the effect of preweld and postweld heat treatment on the corrosion behavior of Ti-6Al-4V alloy weldment was investigated. Gas tungsten arc welding (GTAW) was used for butt welding of specimens. In order to study the effects of heat treatment on the weldment microstructure and corrosion properties, a combination of stress relieving, solution treatment and aging were used. Corrosion behavior was determined in Ringer's solution at 37 degrees C using tafel polarization. Microstructure of base metal (BM), fusion zone (FZ) and heat affected zone (HAZ) was studied with optical and scanning electron microscopy (SEM). The results of corrosion tests showed that corrosion behavior of the BM was better than the FZ and HAZ. This phenomenon was attributed to alloying elements heterogeneity due to columnar-grain of the FZ and adjacent HAZ. Postweld heattreatment particularly solution treatment and aging improved the corrosion behavior of the weldments. Furthermore, uniformity in corrosion potentials of different zones was achieved from the solution treatment and aging operation carried out subsequent to welding. This is due to the precipitation ofaphase from the small quantities of retained beta and beta-phase from the martensite, respectively. Heat treatment did not have any significant effect in improving the corrosion behavior of the BM. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：388 / 394

页数：7

共 33 条

[11] Influence of microstructure and alloying elements on corrosion behavior of Ti-13Nb-13Zr alloy [J].

Geetha, M ;

Mudali, UK ;

Gogia, AK ;

Asokamani, R ;

Raj, B .

CORROSION SCIENCE, 2004, 46 (04) :877-892

[12] Corrosion behavior of Ti-6Al-4V alloy welded by scanning electron beam [J].

Han, Z ;

Zhao, H ;

Chen, XF ;

Lin, HC .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2000, 277 (1-2) :38-45

[13] Artificial neural network modeling for evaluating of epitaxial growth of Ti6Al4V weldment [J].

Karimzadeh, F. ;

Ebnonnasir, A. ;

Foroughi, A. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2006, 432 (1-2) :184-190

[14] Effect of microplasma arc welding process parameters on grain growth and porosity distribution of thin sheet Ti6Al4V alloy weldment [J].

Karimzadeh, F ;

Salehi, M ;

Saatchi, A ;

Meratian, M .

MATERIALS AND MANUFACTURING PROCESSES, 2005, 20 (02) :205-219

[15] Studies on weldability of Ti-5Ta-1.8Nb alloy [J].

Karthikeyan, T ;

Dasgupta, A ;

Saroja, S ;

Vijayalakshmi, M ;

Raghunathan, VS .

JOURNAL OF NUCLEAR MATERIALS, 2004, 335 (03) :299-301

[16] The corrosion behaviour of Ti-6Al-4V, Ti-6Al-7Nb and Ti-13Nb-13Zr in protein solutions [J].

Khan, MA ;

Williams, RL ;

Williams, DF .

BIOMATERIALS, 1999, 20 (07) :631-637

[17] Titanium alloys in total joint replacement - a materials science perspective [J].

Long, M ;

Rack, HJ .

BIOMATERIALS, 1998, 19 (18) :1621-1639

[18] In vitro corrosion behaviour of titanium alloys without vanadium [J].

López, MF ;

Gutiérrez, A ;

Jiménez, JA .

ELECTROCHIMICA ACTA, 2002, 47 (09) :1359-1364

[19] Property optimization through microstructural control in titanium and aluminum alloys [J].

Lütjering, G .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1999, 263 (02) :117-126

[20]

Lutjering G., 2007, TITANIUM, V2nd, P104

← 1 2 3 4 →