Advanced Technology for Preparing Bar from Medical Grade Ti-Zr-Nb Superelastic Alloy Based on Combination of Radial-Shear Rolling and Rotary Forging


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Prospects are presented for the technology of preparing biomedical Ti–Zr–Nb shape memory alloy 3–8 mm diameter bars more than 2000 mm long using an advanced combination of radial shear rolling and rotary forging. Radial shear rolling parameters are calculated on the basis of technological limitations of true degree and rate of deformation of 0.05–0.5 and 1–5 sec–1 respectively per pass. Full-scale experimental verification of the technology is performed in NITU MISiS 1030 and 1440 radial shear rolling mini-mills with subsequent rotary forging using an RKM2 machine. Bars are obtained with a grain size of ∼ 40 μm demonstrating superelastic behavior at room temperature with a favorable combination of relatively low Young’s modulus (E = 39 GPa) and relatively high strength (σf = 618 MPa). The technology has a high degree of readiness for direct industrial application.

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V. Sheremet’ev

National Research Technological University MISiS

编辑信件的主要联系方式.
Email: sheremetyev@misis.ru
俄罗斯联邦, Moscow

A. Kudryashova

National Research Technological University MISiS

Email: sheremetyev@misis.ru
俄罗斯联邦, Moscow

Xuan Dinh

National Research Technological University MISiS

Email: sheremetyev@misis.ru
俄罗斯联邦, Moscow

S. Galkin

National Research Technological University MISiS

Email: sheremetyev@misis.ru
俄罗斯联邦, Moscow

S. Prokoshkin

National Research Technological University MISiS

Email: sheremetyev@misis.ru
俄罗斯联邦, Moscow

V. Brailovskii

Ecole de Technologie superieure

Email: sheremetyev@misis.ru
加拿大, Montreal

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