Tailoring Microstructure and Tribological Properties of Cold Deformed TiZrAlV Alloy by Thermal Treatment

doi:10.1007/s40195-017-0558-7

Acta Metallurgica Sinica (English Letters) ›› 2017, Vol. 30 ›› Issue (5): 493-498.DOI: 10.1007/s40195-017-0558-7

收稿日期:2016-12-02 修回日期:2017-01-11 出版日期:2017-05-20 发布日期:2017-05-23
作者简介:
作者简介冯立,男,1984年生,硕士,工程师

Tailoring Microstructure and Tribological Properties of Cold Deformed TiZrAlV Alloy by Thermal Treatment

Guo-Sheng Zhang¹, De-Feng Guo^1,²(), Ming Li¹, Jing-Tao Li^1,², Qian Zhang¹, Xiao-Hong Li¹, Xiang-Yi Zhang¹()

1.State Key Laboratory of Metastable Materials Science and Technology Yanshan University Qinhuangdao China
2.College of Science Yanshan University Qinhuangdao China

Received:2016-12-02 Revised:2017-01-11 Online:2017-05-20 Published:2017-05-23
About author:
These authors contributed equally to this work.

摘要/Abstract

Abstract:

Microstructure evolution and tribological properties of a new TiZrAlV alloy have been investigated in the present study. Various microstructures, i.e., equiaxed grain structure, dual-phase lamella structure, and heterogeneous lamellar structure, have been successfully prepared, and the effect of the microstructure on tribological properties was explored by means of cold severe plastic deformation combined with subsequent recrystallization annealing and aging treatments. The special heterogeneous lamellar-structured alloy exhibits a high ultimate tensile strength (~1545 MPa), reasonable ductility (~7.9%), and excellent wear resistance as compared with the equiaxed grain-structured and dual-phase lamella-structured alloy. The present study demonstrates an alternative route for enhancing the tribological properties of alloys with heterogeneous lamellar structure.

Key words: Titanium alloy, Severe plastic deformation, Thermal treatment, Microstructure, Tribological property

. [J]. Acta Metallurgica Sinica (English Letters), 2017, 30(5): 493-498.

Guo-Sheng Zhang, De-Feng Guo, Ming Li, Jing-Tao Li, Qian Zhang, Xiao-Hong Li, Xiang-Yi Zhang. Tailoring Microstructure and Tribological Properties of Cold Deformed TiZrAlV Alloy by Thermal Treatment[J]. Acta Metallurgica Sinica (English Letters), 2017, 30(5): 493-498.

图/表 5

Fig. 1 Bright-field TEM images of the annealed a, first- b, second-step c aged SPD TiZrAlV samples. The equiaxed α grains, α lamellas, and α″ lamellas are indicated by the symbols αp, α, and yellow arrows, respectively

Fig. 2 Metallographic images of the surface morphologies of the annealed a, first- b, second-step c aged SPD TiZrAlV samples after a 6000-cycle friction wear test. The variation in wear mass with the increasing thermal treatment procedure is shown in d

Fig. 3 FESEM images of surface morphologies of annealed a, first- b, second-step c aged SPD TiZrAlV samples after a 6000-cycle friction wear test

Fig. 4 Engineering tensile stress-strain curves of SPD samples after annealing a, first- b, second-step c aging. The inset shows the Vickers hardness of TiZrAlV samples after annealing, first- and second-step aging treatments

Fig. 5 Subsurface bright-field TEM images of the annealed a, first- b, second-step c aged SPD TiZrAlV samples after friction wear test. d, f High-magnification bright- and dark-field images of the local area in c. e SAED pattern is achieved from the encircled region in d. Dislocations in a, b, α″ laths in c are indicated with triangles and red arrows, respectively

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Tailoring Microstructure and Tribological Properties of Cold Deformed TiZrAlV Alloy by Thermal Treatment

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