Two-Step Martensitic Transformation in an Aged Ti_{50}Ni_{15}Pd_{25}Cu_{10} High Temperature Shape Memory Alloys

• Authors: S. Rehman , M. Khan , A. Nusair Khan , L. Ali , S. Imran Jaffery
• Languages of publication: EN

Abstracts

EN

Multi-step martensitic transformation in an aged Ni-rich binary NiTi shape memory alloy is considered as usual behavior during transformation from austenite to martensite phase; from (austenite) B2 to R-phase and then R-phase to B19' (monoclinic). However, for equi-atomic NiTi-based quaternary high temperature shape memory alloy, two-step martensitic transformation was detected for the first time. The Ti_{50}Ni_{15}Pd_{25}Cu_{10} high temperature shape memory alloys were investigated for the evolution of transformation temperatures at aging temperature of 550°C and 700°C. Aging at 550°C for 6 h resulted in significant reduction of phase transformation temperatures. During forward transformation from austenite to martensite, two-step martensitic transformation B2 → R and R → B19 (orthorhombic) was observed. By aging the alloy at 700°C for 6 h, no significant effect was found on phase transition behavior and transformation temperatures.

Keywords

EN

81.30.Kf

Discipline

• 81.30.Kf: Martensitic transformations

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2015
• Volume: 128
• Issue: 2B
• Pages: B-125-B-127

Dates

published

2015-8

Contributors

author

S. Rehman

• School of Mechanical and Manufacturing Engineering (SMME), National University of Science and Technology (NUST), Islamabad, Pakistan

author

M. Khan

• School of Mechanical and Manufacturing Engineering (SMME), National University of Science and Technology (NUST), Islamabad, Pakistan

author

A. Nusair Khan

• Institute of Industrial Control System (IICS), Rawalpindi, Pakistan

author

L. Ali

• School of Mechanical and Manufacturing Engineering (SMME), National University of Science and Technology (NUST), Islamabad, Pakistan

author

S. Imran Jaffery

• School of Mechanical and Manufacturing Engineering (SMME), National University of Science and Technology (NUST), Islamabad, Pakistan

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Identifiers

DOI

10.12693/APhysPolA.128.B-125