Effect of HPT and accumulative HPT on structure formation and microhardness of the novel Ti18Zr15Nb alloy

被引：15
|
作者：
Gunderov, D. [1 ,2 ]
Prokoshkin, S. [3 ]
Churakova, A. [1 ,2 ]
Sheremetyev, V [3 ]
Ramazanov, I [2 ]
机构：
[1] Ufa Fed Res Ctr RAS, Inst Mol & Crystal Phys, Ufa, Russia
[2] Ufa State Aviat Tech Univ, Ufa, Russia
[3] Natl Univ Sci & Technol MISiS, Moscow, Russia
来源：
MATERIALS LETTERS | 2021年 / 283卷
基金：
俄罗斯科学基金会;
关键词：
SHAPE-MEMORY ALLOYS; MECHANICAL-PROPERTIES; TI; PRESSURE; NB; MICROSTRUCTURE; DEFORMATION; TEMPERATURE; FEATURES; ZR;
D O I：
10.1016/j.matlet.2020.128819
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Effect of HPT and accumulative HPT on the Ti18Zr15Nb biomedical alloy has been studied. According to the XRD and TEM data, the beta-phase is a main phase in the alloy both in the initial state and after processing by HPT and accumulative HPT. The beta-phase X-ray line width after HPT processing, and especially after ACC HPT processing has drastically increased as a result of an increase in defect concentration and grain refinement. According to TEM, the grains after HPT processing for n = 10 revolutions are refined in some regions down to 10-30 nm. As a result of HPT processing, the alloy's microhardness has noticeably increased, which indicates an increase in strength and yield stress together with the preservation of the fl-state. (C) 2020 Elsevier B.V. All rights reserved.
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页数：4
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