On the production and properties of novel particulate NiTip/AA2124 metal matrix composites

Martín, David San; Risanti, Doty Dewi; Garcés, G.; Rivera-Dı́az-del-Castillo, P.E.J.; Zwaag, Sybrand van der

doi:10.1016/j.msea.2009.07.061

Cited by 13 publications

(4 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As discussed by Furuya [147], the implementation of SMAs leads to two potential interesting mechanisms: (i) development of compressive residual or bias stresses to increase the apparent yield strength through the pre-strain assisted SME, and (ii) application of compressive stresses around a crack tip through the SME. The increase of apparent yield strength at higher temperatures was first shown experimentally in aluminum metal matrix composites reinforced with NiTi fibers [148,8,147] and particulates [361][362][363]392]. Recently, in the interfacial layer.…”

Section: Applicationsmentioning

confidence: 92%

Review and perspectives: shape memory alloy composite systems

et al. 2015

View full text Add to dashboard Cite

Following their discovery in the early 60's, there has been a continuous quest for ways to take advantage of the extraordinary properties of shape memory alloys (SMAs). These intermetallic alloys can be extremely compliant while retaining the strength of metals and can convert thermal energy to mechanical work. The unique properties of SMAs result from a reversible difussionless solid-to-solid phase transformation from austenite to martensite. The integration of SMAs into composite structures has resulted in many benefits, which include actuation, vibration control, damping, sensing, and selfhealing. However, despite substantial research in this area, a comparable adoption of SMA composites by industry has not yet been realized. This discrepancy between academic research and commercial interest is largely associated with the material complexity that includes strong thermomechanical coupling, large inelastic deformations, and variable thermoelastic properties. Nonetheless, as SMAs are becoming increasingly accepted in engineering applications, a similar trend for SMA composites is expected in aerospace, automotive, and energy conversion and storage related applications. In an effort to aid in this endeavor, a comprehensive overview of advances with regard to SMA composites and devices utilizing them is pursued in this paper. Emphasis is placed on identifying the characteristic responses and properties of these material systems as well as on comparing the various modeling methodologies for describing their response. Furthermore, the paper concludes with a discussion of future research efforts that may have the greatest impact on promoting the development of SMA composites and their implementation in multifunctional structures.

show abstract

Section: Applicationsmentioning

confidence: 92%

Review and perspectives: shape memory alloy composite systems

et al. 2015

View full text Add to dashboard Cite

show abstract

“…To predict the undesired beginning of the plastic deformation in dependence of the recovery stress of the SMA wire, it has to be estimated when the generated stress in the matrix overcomes the flow stress of the aluminum. In both components the generated stress during the bending can be calculated by equations (16) and (17) if the recovery stress σ recovery is known. The experimental investigations in section 2 have shown that the transition between a pure elastic and an elastic plastic deformation of all actuators lies between 75 °C and 100 °C.…”

Section: Analysis Of the Occurring Stressesmentioning

confidence: 99%

“…Besides the improvement of the mechanical properties, the investigations show the ability of Ni-Ti/Al composites to be used as load or strain sensors. Extrusion was used by San Martín et al [16] for processing of a composite, based on AA2124 aluminum powder, containing NiTi particles. The composites show improved strength and lower ductility compared to the nonreinforced specimens.…”

Section: Introductionmentioning

confidence: 99%

Thermomechanical behavior of shape memory alloy metal matrix composite actuator manufactured by composite extrusion

Dahnke

Reeb

Pottmeyer

et al. 2019

Smart Mater. Struct.

View full text Add to dashboard Cite

Continuous composite extrusion represents a new possibility for the manufacturing of shape memory alloy metal matrix composites (SMA-MMC). During the process SMA wires are embedded into aluminum or magnesium profiles by means of modified porthole dies. Due to the high flexibility regarding the profile geometry, the materials as well as number, thickness and position of the SMA elements, the process can be used for the generation of a profile integrated bending function. The bending function of the actuator profile depends on the temperature and is thermally activated. The parameters influencing the behavior of the manufactured composited actuators are experimentally investigated. It is found that the radius of curvature mainly depends on the recovery stress and the eccentric position of the SMA wire as well as on the bending stiffness of the actuator profile. The bending mechanism and the experimental results are described by the use of an analytical model as well as a finite element analysis. Based on the results the analytical model is used for the targeted design of a profile with multiple embedded NiTi wires, which is able to perform a repeatable, pure elastic deflection within a defined temperature range between room temperature and 75 °C.

show abstract

“…The powder-metallurgy leads to a high bonding quality resulting in an increase of the yield, ultimate and shear strength as well as an increased fatigue life. San Martín et al [19] combined NiTi particles and AA2124 powder in an extrusion process. In comparison to non-reinforced specimens, the composites showed a lower ductility, higher strength as well as an improved damping capacity (Thorat et al [20]).…”

Section: Introductionmentioning

confidence: 99%

Influence of SMA-induced stress on shape memory alloy metal matrix composites manufactured by continuous composite extrusion

Dahnke

Pottmeyer

Pinter

et al. 2019

Smart Mater. Struct.

View full text Add to dashboard Cite

In shape memory alloy metal matrix composites manufactured by continuous composite extrusion the strategies of active property tuning and active strain energy tuning are used for the improvement of the mechanical properties of the components. Due to the thermal activation of the embedded NiTi wires (SM495), compressive stresses are transferred to the surrounding aluminum matrix (AA6060). At elevated temperatures tensile tests, three-point-bending tests and notch impact test show the influence of temperature, prestrain and reinforcing volume on the component performance. In tensile testing, a simultaneous increase of strength and ductility can be found, leading to an increase of the energy abortion capacity. Results of the three-pointbending test and notch impact test also show an increase of the required work depending on the thermomechanical treatment of the specimens.

show abstract

On the production and properties of novel particulate NiTip/AA2124 metal matrix composites

Cited by 13 publications

References 10 publications

Review and perspectives: shape memory alloy composite systems

Review and perspectives: shape memory alloy composite systems

Thermomechanical behavior of shape memory alloy metal matrix composite actuator manufactured by composite extrusion

Influence of SMA-induced stress on shape memory alloy metal matrix composites manufactured by continuous composite extrusion

Contact Info

Product

Resources

About