Influence of Heat Treatment on Microstructures and Textures of Hot-Extruded Ni47Ti44Nb9 Shape Memory Alloy Tubes

被引：0

作者：

Yan, Ying ^{[1
]}

Jin, Wei ^{[2
]}

Li, Xiao-wu ^{[1
]}

机构：

[1] Northeastern Univ, Coll Sci, Inst Mat Phys & Chem, Shenyang 110004, Peoples R China

[2] Chinese Acad Sci, Met Res Inst, Shenyang 110016, Peoples R China

来源：

ADVANCES IN KEY ENGINEERING MATERIALS | 2011年 / 214卷

关键词：

Hot-extruded Ni47Ni44Nb9 tube; Texture; Microstructure; Heat treatment; NITI; TRANSFORMATION; DEFORMATION; ORIENTATION; BEHAVIOR; CRYSTALS;

D O I：

10.4028/www.scientific.net/AMR.214.286

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Microstructures and textures of the hot forged bar and hot-extruded tubes of Ni47Ti44Nb9 alloy as well as influence of heat treatment on them were studied in order to obtain a desired preferred orientation along the tube radial direction. The results show that B2 phase in hot-extruded tubes has a fine fibred shape and the main texture components are close to gamma-fibre. Many fine recrystallized grains are formed for tubes heat treated at 600 degrees C and gamma-fibre is enhanced, which is beneficial to improving shape memory performances along the tube radial direction. Grain growth occurs at 850 degrees C, and strong texture components deviate from gamma-fibre.

引用

页码：286 / +

页数：2

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