Microstructure and shape memory property of Ti containning iron-based shape memory alloys prepared with melt spinning

被引：0

作者：

Chen, Wei ^{[1
,2
]}

Bao, Yun-Bin ^{[1
,2
]}

Chen, Chuan-Hui ^{[1
,2
]}

Bai, Yang ^{[1
,2
]}

Ye, Xu-Chu ^{[1
,2
]}

机构：

[1] College of Materials Science and Engineering, Nanjing Technology University, Nanjing, China

[2] State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Technology University, Nanjing, China

来源：

Gongneng Cailiao/Journal of Functional Materials | 2015年 / 46卷 / 03期

关键词：

Scanning electron microscopy - Titanium - Recovery - Shape optimization - Silicon alloys - Manganese alloys - Melt spinning - Iron alloys - Microstructure - Tensile testing - X ray diffraction;

D O I：

10.3969/j.issn.1001-9731.2015.03.027

中图分类号：

学科分类号：

摘要：

Three kinds of SMAs with different composition Fe-30Mn-6Si, Fe-30Mn-6Si-1Ni, and Fe-30Mn-6Si-1Ni-1Ti were prepared with melt spinning. The microstructure of these alloys were analysed with X-ray diffraction (XRD), optical microscope (OM) and scanning-electron microscope (SEM), the shape recovery strain of the alloys were measured by tensile test. Dendrite spikes appears in Fe-30Mn-6Si, the dendrite arm spacing was about 0.2 μm. Equiaxial austenite grains distributed uniformly in Fe-30Mn-6Si-1Ni and Fe-30Mn-6Si-1Ni-1Ti, the grain size in Fe-30Mn-6Si-1Ni-1Ti was bigger. When the pre-strain was 1% and 1.5%, the shape recovery strain of Fe-30Mn-6Si-1Ni was higher than Fe-30Mn-6Si-1Ni-1Ti. When the pre-strain was 2%, the shape recovery strain of Fe-30Mn-6Si-1Ni-1Ti is higher than Fe-30Mn-6Si-1Ni. The Fe-30Mn-6Si-1Ni-1Ti shows the highest shape recovery strain 2% when then pre-strain was 3%. ©, 2015, Journal of Functional Materials. All right reserved.

引用

页码：03127 / 03130