Size effects of NiTi nanoparticle on thermally induced martensitic phase transformation

被引：21

作者：

Chen, Zhibin ^{[1
]}

Qin, Shengjian ^{[1
]}

Shang, Jiaxiang ^{[1
]}

Wang, Fuhe ^{[2
]}

Chen, Yue ^{[3
]}

机构：

[1] Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China

[2] Capital Normal Univ, Dept Phys, Beijing 100048, Peoples R China

[3] Univ Hong Kong, Dept Mech Engn, Pokfulam Rd, Hong Kong, Hong Kong, Peoples R China

来源：

INTERMETALLICS | 2018年 / 94卷

基金：

中国国家自然科学基金;

关键词：

NiTi nanoparticles; Phase transformation; Twinning; Molecular dynamics; SHAPE-MEMORY ALLOYS; MOLECULAR-DYNAMICS; LATTICE STABILITY; SUPERELASTICITY; SIMULATIONS; TEMPERATURE; TRANSITION; NUCLEATION; PARTICLES; STRAIN;

D O I：

10.1016/j.intermet.2017.12.012

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Molecular dynamics simulations are performed to study the thermally induced martensitic phase transformation (B2-B19') of NiTi free-standing nanoparticles. We successfully reproduce the experimental observations that the martensitic transformation temperature decreases with reducing particle size and the martensite may form self accommodated herringbone morphology. It is found that a core-shell structure with shell thickness of 0.3 nm (approximately equal to one unit cell) exists in NiTi nanoparticles and the B2-019' transformation is dominated by the core region. In addition, three detwinning manners are observed in the reverse martensitic phase transformation (B19'-B2) process. It is concluded that the suppression of B2-B19' transformation in NiTi nanoparticles is due to the lack of nucleation sites and the size dependent martensitic morphology originates from the constraints of surface shell.

引用

页码：47 / 54

页数：8

共 47 条

[1] Stress-induced nanoscale phase transition in superelastic NiTi by in situ X-ray diffraction [J].

Ahadi, Aslan ;

Sun, Qingping .

ACTA MATERIALIA, 2015, 90 :272-281

[2] Structure of nanometer-sized Au-Cd alloy particles near equiatomic compositions at room temperature [J].

Asaka, K ;

Hirotsu, Y ;

Tadaki, T .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2001, 312 (1-2) :232-236

[3] A technical and economic appraisal of shape memory alloys for aerospace applications [J].

Chau, E. T. F. ;

Friend, C. M. ;

Allen, D. M. ;

Hora, J. ;

Webster, J. R. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2006, 438 (589-592) :589-592

[4] STATISTICS OF MARTENSITIC NUCLEATION [J].

CHEN, IW ;

CHIAO, YH ;

TSUZAKI, K .

ACTA METALLURGICA, 1985, 33 (10) :1847-1859

[5] Molecular dynamics modeling of NiTi superelasticity in presence of nanoprecipitates [J].

Chowdhury, Piyas ;

Patriarca, Luca ;

Ren, Guowu ;

Sehitoglu, Huseyin .

INTERNATIONAL JOURNAL OF PLASTICITY, 2016, 81 :152-167

[6] NiTi superelasticity via atomistic simulations [J].

Chowdhury, Piyas ;

Ren, Guowu ;

Sehitoglu, Huseyin .

PHILOSOPHICAL MAGAZINE LETTERS, 2015, 95 (12) :574-586

[7] Length scale effects and multiscale modeling of thermally induced phase transformation kinetics in NiTi SMA [J].

Frantziskonis, George N. ;

Gur, Sourav .

MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING, 2017, 25 (04)

[8] Influence of Ni on martensitic phase transformations in NiTi shape memory alloys [J].

Frenzel, J. ;

George, E. P. ;

Dlouhy, A. ;

Somsen, Ch. ;

Wagner, M. F. -X. ;

Eggeler, G. .

ACTA MATERIALIA, 2010, 58 (09) :3444-3458

[9] Wet-chemical synthesis and martensitic phase transformation of Au-Cd nanoparticles with near-equiatomic composition [J].

Frommen, C ;

Wilde, G ;

Rösner, H .

JOURNAL OF ALLOYS AND COMPOUNDS, 2004, 377 (1-2) :232-242

[10] Evolution of internal strain in austenite phase during thermally induced martensitic phase transformation in NiTi shape memory alloys [J].

Gur, Sourav ;

Manga, Venkateswara Rao ;

Bringuier, Stefan ;

Muralidharan, Krishna ;

Frantziskonis, George N. .

COMPUTATIONAL MATERIALS SCIENCE, 2017, 133 :52-59

← 1 2 3 4 5 →