Ni50.8Ti49.2 alloy prepared by double-wire plus arc additive manufacturing with a substrate heating temperature of 600 °C

被引：10

作者：

Han, Jian ^{[1
]}

Chen, Xinya ^{[1
]}

Zhang, Guoyang ^{[1
]}

Liu, Bang ^{[1
]}

Cai, Yangchuan ^{[1
]}

Chen, Minfang ^{[1
]}

Jiang, Hongbing ^{[2
]}

Tian, Yinbao ^{[1
,2
,3
]}

机构：

[1] Tianjin Univ Technol, Sch Mat Sci & Engn, Tianjin, Peoples R China

[2] Jiangsu Yasheng Met Prod Co Ltd, Taizhou, Jiangsu, Peoples R China

[3] Hebei Univ Technol, Sch Mat Sci & Engn, Tianjin, Peoples R China

来源：

JOURNAL OF MANUFACTURING PROCESSES | 2023年 / 104卷

关键词：

Wire plus arc additive manufacturing; Shape memory alloys; Intermetallic compound; Superelasticity; In; -situ; SHAPE-MEMORY ALLOY; TRANSFORMATION BEHAVIOR; MECHANICAL-PROPERTIES; NI-ALLOY; PRECIPITATION;

D O I：

10.1016/j.jmapro.2023.08.042

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this study, a Ni50.8Ti49.2 single-walled component was prepared in-situ using double-wire + arc additive manufacturing using a substrate heated to 600 degrees C and TA1 and ER-Ni wires used as raw materials. The micro-structure and properties of the component were thoroughly investigated. The results revealed that Ni4Ti3 precipitated mainly in spherical and needle-like forms, contributing to improved component strength through coherent strain strengthening and lattice distortion, respectively. The maximum hardness value reached an impressive 531 HV0.2. DSC curves showed distinct transformation temperatures: As =-24.8 degrees C, Af = 11.7 degrees C, Ms = 12.5 degrees C, and Mf =-28.1 degrees C. The presence of the precipitated phase altered the Ni content of the matrix, leading to overlapping peaks during the phase transformation process. After 15 cycles of compression, the component exhibited an unrecoverable strain approaching 1.75 %, demonstrating a certain degree of superelasticity.

引用

页码：76 / 86

页数：11

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