Molecular dynamics study of phase transformations in NiTi shape memory alloy embedded with precipitates

نویسندگان

چکیده

The present study utilizes molecular dynamics simulations to the athermal and stress-induced martensitic transformation of B2 B19' phase in a Ni-Ti alloy effect precipitates on transformation. demonstrate existence an intermediate B19 between martensite austenite phases. Nickel-Titanium shape memory with is studied by introducing Ni3Ti, NiTi2 Ni4Ti3 individually using atomistic simulations. results show that transition temperature decreases presence large volume fraction precipitates. A blended model Ni3Ti simulated equiatomic NiTi alloy. indicate would initiate emergence reduce temperature. In addition, variation Nickel content embedded lead change microstructural phenomena.

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Structural transformations in NiTi shape memory alloy nanowires

Reza Mirzaeifar, Ken Gall, Ting Zhu, Arash Yavari, and Reginald DesRoches George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, USA School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, USA School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332,...

متن کامل

Nanofretting behaviors of NiTi shape memory alloy

Nanofretting behaviors of NiTi shape memory alloy Linmao Qian a, Zhongrong Zhou a,∗, Qingping Sun b, Wenyi Yan c a Tribology Research Institute, National Traction Power Laboratory, Southwest Jiaotong University, Chengdu 610031, China b Department of Mechanical Engineering, The Hong Kong University of Science and Technology, Hong Kong, China c School of Engineering and Information Technology, De...

متن کامل

Microstructure and precipitates in annealed Co38Ni33Al29 ferromagnetic shape memory alloy

Transmission electron microscopy was performed to investigate the microstructure and precipitates in the annealed Co38Ni33Al29 ferromagnetic shape memory alloy. Apart from the dendritic secondary phase in the austenite matrix, micron-sized (up to 100 lm) fcc-based precipitates with partial c0 L12 ordering and containing none, one or three {111}p parallel twin planes were found. The orientation ...

متن کامل

On the Damping Behaviour of Niti Shape Memory Alloy

Shape memory alloys exhibit a high damping capacity in the mktensite state. Results obtained from both DMA and cyclic tests under tension-compression load show that the martensite damping capacity in NiTi SMAs is a function of both strain amplitude and annealing temperature. Internal friction due to movements of martensite twin boundaries within both elastic (accommodation) and inelastic (reori...

متن کامل

Ultrasonically assisted turning of NiTi based shape memory alloy

In this study, vibration cutting has been applied to machining of a novel material, NiTi based shape memory alloy (SMA), using a commercial ultrasonic piezoelectric transducer to vibrate an ISO insert CCMT geometry cutting tool. The effect of vibration in turning process was characterized by investigating the surface roughness of workpiece and surface quality assessment of machined surface usin...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Materials research express

سال: 2021

ISSN: ['2053-1591']

DOI: https://doi.org/10.1088/2053-1591/ac2b57