Study of structural phase transitions in quinary TiNi(MoFeAg)-based alloys

被引：10

作者：

Gunther, Victor ^{[1
]}

Marchenko, Ekaterina ^{[1
]}

Chekalkin, Timofey ^{[1
,2
]}

Baigonakova, Gulsharat ^{[1
]}

Kang, Ji-Hoon ^{[2
]}

Kim, Ji-Soon ^{[3
]}

Klopotov, Anatoliy ^{[1
]}

机构：

[1] Tomsk State Univ, Res Inst Med Mat, Tomsk, Russia

[2] Kang & Pk Med, R&D Dept, Ochang, South Korea

[3] Univ Ulsan, Sch Mat Sci & Engn, Ulsan, South Korea

来源：

MATERIALS RESEARCH EXPRESS | 2017年 / 4卷 / 10期

关键词：

TiNi-based alloys; martensitic transformation; resistivity; alloying; SHAPE-MEMORY ALLOYS; MARTENSITIC-TRANSFORMATION BEHAVIOR; R-PHASE; AG;

D O I：

10.1088/2053-1591/aa9087

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The structural phase transitions of quinary Ti50Ni49.5-XMo0.3Fe0.2AgX (X = 0, 0.1, 0.2, 0.5, 1.0, and 1.5 at%) alloys prepared by vacuum-induction melting were studied by means of the four-pointprobe, x-ray diffraction (XRD), and optical microscopy methods after thermal cycling. The two-stage B2 <-> R <-> B19' reversible martensitic transformation (MT) took place in all the investigated samples. It is found that the substitution of Ag for Ni in the studied alloy when C-Ag = 0-0.5 at%, reduces the T-R, M-s, and M-f characteristic points by 20-30 K, whereas they increase by 15-35 K when the Ag content was varied from 1.0 to 1.5 at% and the B2. R. B19' MT was realized in the high-temperature area. XRD patterns of the studied alloys recorded at the ambient temperature detected the pure Ag phase as well as Ti2Ni precipitate with a small volume fraction (up to 5%) alongside with structural lines of B2, R, and B19' phases.

引用

页数：8

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