Effects of transformation twin on Hall–Petch relationship in MnCu alloy

Zhong, Yong; Sakaguchi, Takuya; Yin, Fuxing

doi:10.1016/j.msea.2008.04.035

Cited by 30 publications

(8 citation statements)

References 34 publications

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“…High strain hardening is evident. The yield strength of the composite is about 450 MPa, which is higher than the martensitic NiTi (about 100 MPa) [19] and Mn-Cu (approximately 300 MPa) [9,10] damping alloys. The cylindrical sample was observed to fracture by shear.…”

Section: Methodsmentioning

confidence: 76%

“…Thus, this high damping capacity of the composite at low temperatures can be ascribed to the contribution of the Ti 3 Sn component. The highest tan d of the composite reached is 0.075, which exceeds those of martensitic NiTi SMAs [11,12] and commercial Mn-Cu-based high damping alloys [9,10]. Fig.…”

Section: Methodsmentioning

confidence: 85%

“…The maximum damping capacity of Ti 3 Sn has been reported to reach 0.2 (indexed by tan d) [8], which is over four times higher than those of typical commercial Mn-Cu-based high-damping alloys (with tan d of about 0.05) [9,10] and NiTi shape memory alloys (tan d approximate 0.04) [11,12]. However, due to the lack of adequate slip systems in its D0 19 crystal structure, the Ti 3 Sn intermetallic compound is extremely brittle [13,14].…”

Section: Introductionmentioning

confidence: 97%

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High damping NiTi/Ti3Sn in situ composite with transformation-mediated plasticity

et al. 2014

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a b s t r a c tThe concept of transformation-induced plasticity effect is introduced in this work to improve the plasticity of brittle intermetallic compound Ti 3 Sn, which is a potent high damping material. This concept is achieved in an in situ NiTi/Ti 3 Sn composite. The composite is composed of primary Ti 3 Sn phase and (NiTi + Ti 3 Sn) eutectic structure formed via hypereutectic solidification. The composite exhibits a high damping capacity of 0.075 (indexed by tan d), a high ultimate compressive strength of 1350 MPa, and a large plasticity of 27.5%. In situ synchrotron high-energy X-ray diffraction measurements revealed clear evidence of the stress-induced martensitic transformation (B2 ? B19 0 ) of the NiTi component during deformation. The strength of the composite mainly stems from the Ti 3 Sn, whereas the NiTi component is responsible for the excellent plasticity of the composite.

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Section: Methodsmentioning

confidence: 76%

Section: Methodsmentioning

confidence: 85%

Section: Introductionmentioning

confidence: 97%

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High damping NiTi/Ti3Sn in situ composite with transformation-mediated plasticity

et al. 2014

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“…The powder ratio can be freely adjusted during processing, which has obvious advantages in the preparation of vertical gradient materials [ 31 , 32 , 33 ]. In terms of materials, we chose M2052 alloy, widely used in the field of vibration and noise reduction, and developed M2052–NAB gradient alloy based on NAB alloy, the mainstream material in the field of marine propellers [ 34 , 35 , 36 ]. The M2052 alloy was used as the material of the propeller hub to improve vibration reduction of the shaft.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of MnCuNiFe–CuAlNiFeMn Gradient Alloy by Laser Engineering Net Shaping System

et al. 2022

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Marine noise pollution generated by propellers is of wide concern. Traditional propeller materials (nickel–aluminum bronze (NAB) alloys) can no longer meet the requirements for reducing shaft vibration. However, the Mn–Cu alloy developed to solve the problem of propeller vibration is affected by seawater corrosion, which greatly limits the application of the alloy in the field of marine materials. In this study, the M2052–NAB gradient alloy was developed for the first time using LENS technology to improve the corrosion resistance while retaining the damping properties of the M2052 alloy. We hope this alloy can provide a material research basis for the development of low-noise propellers. This study shows that, after solution-aging of M2052 alloy as the matrix, the martensitic transformation temperature increased to approach the antiferromagnetic transformation temperature, which promoted twinning and martensitic transformation. The aging process also eliminated dendrite segregation, promoted the equiaxed γ-MnCu phase, and increased the crystal size to reduce the number of dislocations, resulting in obvious modulus softening of the alloy. NAB after deposition had higher hardness and good corrosion resistance than the as-cast alloy, which offers good corrosion protection for the M2052 alloy. This research provides new material options for the field of shipbuilding.

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“…Many studies on Mn-Cu damping alloys have reported that the damping characteristics are dependent on the vibration amplitude and frequency. 9,11,12 Generally, Mn-Cu damping alloys are used in structural components that do not undergo plastically deformation. Nonetheless, the Mn-Cu damping alloy is a nonlinear elastic material and it behavior differs from steel and other linear elastic materials.…”

Section: Introductionmentioning

confidence: 99%

Dynamic characteristics of Mn-Cu high damping alloy subjected to impact load

Zhu¹,

Mao²,

Zhao³

et al. 2021

Advances in Mechanical Engineering

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Mn-Cu high damping alloy is a twin-type damping alloy. Owing to its martensite twin structure at room temperature, it can convert vibration energy into heat energy, thereby reducing vibration. Although essentially a nonlinear elastic material, Mn-Cu damping alloys are treated as linear elastic materials in current engineering practice. However, introducing a constant damping coefficient alone will produce significant errors when modeling vibration reduction characteristics of the material, especially under impact loading. In this study, vibration test was performed on Mn-Cu damping alloy cantilever beam subjected to an impact load and deviation between the test result and the one of existing modeling method was analyzed. A generalized fractional-order Maxwell model was established to describe the nonlinear constitutive relation of the Mn-Cu damping alloy. Then, the model was extended to the three-dimensional state and a secondary development was performed. Finally, various applications for the damping alloy were explored and the effects of the damping alloy on the vibration characteristics of composite cantilever beam structures subjected to impact loads were investigated with the aim of better understanding the dynamic characteristics and improving the effectiveness of vibration reduction applications using Mn-Cu damping alloy in the future.

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Effects of transformation twin on Hall–Petch relationship in MnCu alloy

Cited by 30 publications

References 34 publications

High damping NiTi/Ti3Sn in situ composite with transformation-mediated plasticity

High damping NiTi/Ti3Sn in situ composite with transformation-mediated plasticity

Fabrication of MnCuNiFe–CuAlNiFeMn Gradient Alloy by Laser Engineering Net Shaping System

Dynamic characteristics of Mn-Cu high damping alloy subjected to impact load

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