Influence of Pre-Deformation Strain on Recovery Performance of Ni₄₇Ti₄₄Nb₉ Alloy Φ8mm Pipe Joint

Abstract:

Using the method of expanding diameter in low temperature and water bath heating, this paper studied the effect of pre-deformation strain on shape memory recovery characteristics of Ni₄₇Ti₄₄Nb₉ alloy Φ8 mm pipe joint. The results showed that the transformation hysteresis was relative stable along with the pre-deformation strain more than 12.1%, which was 130°C. And the radial recoverable strain got maximum value 8.4% when the pre-deformation strain was in 10.8%~12.5%. But the radial recovery rate of inside diameter declined smoothly with the pre-deformation strain. Systems considering the three parameters of transformation hysteresis, recoverable strain and strain recovery rate, it seemed the excellent predeformed strain for Ni₄₇Ti₄₄Nb₉ alloy Φ8 mm pipe joint was just in 12%~17%.

• Periodical: Advanced Materials Research (Volume 1095)
• Pages: 140-144
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1095.140
• Online since: March 2015
• Authors: Ke Lu Wang*, Shi Qiang Lu, Gui Fa Li, Jun Wei Liu, Er Min Wang
• Keywords: Connection Performance, Ni₄₇Ti₄₄Nb₉ Alloy, Pre-Deformation Strain, Recovery Property

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