Concentration of transformation-induced plasticity in pseudoelastic NiTi shape memory alloys: Insight from austenite–martensite interface instability

Zhang, Yahui; Chai, Xinliang; Ju, Xiaofei; You, Yajun; Zhang, Shaobin; Zheng, Lin; Moumni, Ziad; Zhu, Jihong; Zhang, Weihong

doi:10.1016/j.ijplas.2022.103481

Cited by 12 publications

(6 citation statements)

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“…The thermal images in figure 4(b) show that stress drops occur when there is an abrupt increase in the wire temperature at the locations where the colour changes. The non-uniform temperature field during phase transformation was also observed by Zhang et al [22]. Such jagged curves in the loading plateau have been observed by Wolons et al [13], Yang et al [8] and Zhang et al [22].…”

Section: Stress-strain Curve Of Sma Wire Under Cyclic Loadingsupporting

confidence: 65%

“…The non-uniform temperature field during phase transformation was also observed by Zhang et al [22]. Such jagged curves in the loading plateau have been observed by Wolons et al [13], Yang et al [8] and Zhang et al [22]. While Yang et al [8] suggested that this phenomenon may be related to the loading rate, other studies, e.g.…”

Section: Stress-strain Curve Of Sma Wire Under Cyclic Loadingsupporting

confidence: 55%

“…They indicated that this local stress came from the incompatible deformation field formed during phase transformation at the austenite-martensite interface. This incident was also found to be accompanied by slipping of dislocations that occurred at the austenite-martensite interface [22]. These stress drops gradually disappear with increasing cycles and after 50 cycles almost no significant stress drops were observed on the loading plateau.…”

Section: Stress-strain Curve Of Sma Wire Under Cyclic Loadingmentioning

confidence: 90%

“…While Yang et al [8] suggested that this phenomenon may be related to the loading rate, other studies, e.g. Zhang et al [22], attributed this phenomenon to the discontinuous evolution of local stress at the grain scale during the stressinduced transformation. They indicated that this local stress came from the incompatible deformation field formed during phase transformation at the austenite-martensite interface.…”

Section: Stress-strain Curve Of Sma Wire Under Cyclic Loadingmentioning

confidence: 99%

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Effect of training on the cyclic behaviour of SMA wire

Davarnia

Cheng

Engelen

2023

Smart Mater. Struct.

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Shape Memory Alloys (SMAs) are a new generation of smart metallic materials with numerous unique and widely applicable characteristics. With their superelasticity and ability to dissipate energy under cyclic loading, SMAs are an excellent choice for passive vibration energy dissipation systems. However, due to functional fatigue, the energy dissipation and recentring capacity of virgin SMA dwindles at a decreasing rate during cyclic loading and eventually reaches a stable level. Since for vibration control applications stable mechanical properties with predictable responses to vibrational forces are preferred, preloading SMA for mechanical training is proposed to overcome this drawback. Nevertheless, the effect of training conditions on the mechanical behaviour of SMA has only been investigated in a few studies. To fill this research gap, the influence of different training parameters, such as strain amplitude, frequency, number of cycles and prestrain, on the mechanical behaviour of SMA is examined. The results show that while a sufficient number of cycles and certain level of strain amplitude are required to reach a stable stress-strain relation, training frequency is the most important parameter for eliminating residual strain.

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Section: Stress-strain Curve Of Sma Wire Under Cyclic Loadingsupporting

confidence: 65%

Section: Stress-strain Curve Of Sma Wire Under Cyclic Loadingsupporting

confidence: 55%

Section: Stress-strain Curve Of Sma Wire Under Cyclic Loadingmentioning

confidence: 90%

Section: Stress-strain Curve Of Sma Wire Under Cyclic Loadingmentioning

confidence: 99%

See 2 more Smart Citations

Effect of training on the cyclic behaviour of SMA wire

Davarnia

Cheng

Engelen

2023

Smart Mater. Struct.

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“…Recently developed advanced high-strength steels (AHSS) present an optimal Metals 2023, 13, 1268 2 of 27 relationship between strength and formability thanks to their multiphasic microstructure, like for example, in the metastable austenitic stainless steels (MASS). In this regard, MASS includes some families where the materials under service-like working conditions induce either phase transformation (transformation-induced plasticity, TRIP) and/or twin formation (twinning-induced plasticity, TWIP) [6]. The present review paper focuses to observe the surface modification on TRIP steels; in particular to the austenite (γ-) to martensite (εand/or α -) phase transformation and their effect in terms of mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Overview of Surface Modification Strategies for Improving the Properties of Metastable Austenitic Stainless Steels

Rezayat

Moghadam

Moradi

et al. 2023

Metals

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Metastable austenitic stainless steels (MASS) are widely used in various industrial applications due to their exceptional compromise between mechanical properties and corrosion resistance. However, the mechanical properties of these materials can be further enhanced by surface treatments. This paper reviews various surface treatment methodologies used to improve the mechanical properties of MASS, with particular attention to laser treatments. The effects of these surface treatments on the microstructure and chemical composition in the thermal affected zone of the MASS are discussed, and their impact on the material’s mechanical properties, such as hardness, tensile strength, and fatigue life, are investigated in detail. Additionally, the paper highlights the limitations of these surface treatments and points out some areas where further research is needed. The findings presented can be used to guide the selection of appropriate surface treatment techniques for specific applications, ultimately improving the performance and lifespan of MASS in various industrial settings.

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