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.

引用

页数：4

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