Improvement of Mechanical Properties of Powder Metallurgical NiTi Shape Memory Alloys

2006 ◽  
Vol 8 (4) ◽  
pp. 247-252 ◽  
Author(s):  
J. Mentz ◽  
M. Bram ◽  
H. P. Buchkremer ◽  
D. Stöver
Keyword(s):  
Mechanical Properties ◽  
Shape Memory Alloys ◽  
Shape Memory ◽  
Niti Shape Memory Alloys

scholarly journals In Situ Structural Characterization of Laser Welded NiTi Shape Memory Alloys

2013 ◽  
Vol 738-739 ◽  
pp. 338-343 ◽  
Author(s):  
Francisco Manuel Braz Fernandes ◽  
Karimbi Koosappa Mahesh ◽  
Corneliu Marius Crăciunescu ◽  
João Pedro Oliveira ◽  
Norbert Schell ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Synchrotron Radiation ◽  
Shape Memory Alloys ◽  
Shape Memory ◽  
Mechanical Behaviour ◽  
State Of The Art ◽  
Structural Characteristics ◽  
Niti Shape Memory Alloys

The demand of emerging joining techniques for shape memory alloys (SMA) has become of great importance, as their functional properties, namely shape memory effect (SME) and superelasticity (SE) present unique solutions for state-of-the-art applications. Literature shows that significant efforts have been conducted on laser welding of these alloys, although very limited results concerning mechanical properties are repeatedly achieved. A better understanding of the mechanical behaviour of these welded joints may be got through a detailed analysis of the structural characteristics of the material from the base metal to the weld bead. Such studies have been carried out on a series of Ni-rich Ni-Ti SMA laser welded plates using synchrotron radiation.

scholarly journals A Short Review on the Microstructure, Transformation Behavior and Functional Properties of NiTi Shape Memory Alloys Fabricated by Selective Laser Melting

Materials ◽  
2018 ◽  
Vol 11 (9) ◽  
pp. 1683 ◽  
Author(s):  
Xiebin Wang ◽  
Sergey Kustov ◽  
Jan Van Humbeeck
Keyword(s):  
Mechanical Properties ◽  
Additive Manufacturing ◽  
Shape Memory Alloys ◽  
Shape Memory ◽  
Selective Laser Melting ◽  
Functional Properties ◽  
Complex Structures ◽  
Transformation Behavior ◽  
Laser Melting ◽  
Niti Shape Memory Alloys

Due to unique functional and mechanical properties, NiTi shape memory alloys are one of the most promising metallic functional materials. However, the poor workability limits the extensive utilization of NiTi alloys as components of complex shapes. The emerging additive manufacturing techniques provide high degrees of freedom to fabricate complex structures. A freeform fabrication of complex structures by additive manufacturing combined with the unique functional properties (e.g., shape memory effect and superelasticity) provide great potential for material and structure design, and thus should lead to numerous applications. In this review, the unique microstructure that is generated by selective laser melting (SLM) is discussed first. Afterwards, the previously reported transformation behavior and mechanical properties of NiTi alloys produced under various SLM conditions are summarized.

Mechanical Properties of NiTi Shape Memory Alloys Welded Joints: A Comparative Study between the GTAW, PAW and LBW Processes

2018 ◽  
Vol 930 ◽  
pp. 526-531
Author(s):  
Raphael Henrique Falcão de Melo ◽  
Matheus José Cunha de Oliveira ◽  
Pedro Ítalo Vidal de Oliveira ◽  
Milton Sérgio Fernandes de Lima ◽  
Theophilo Moura Maciel ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Comparative Study ◽  
Shape Memory Alloys ◽  
Shape Memory ◽  
Welded Joints ◽  
Niti Shape Memory Alloys
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