Remarkable improvement in damping capacity of M2052 alloy by step-cooling treatment
Open Access
- 1 January 2021
- journal article
- research article
- Published by IOP Publishing in Materials Research Express
- Vol. 8 (1), 016526
- https://doi.org/10.1088/2053-1591/abd72e
Abstract
In order to efficiently produce high-damping Mn–Cu based alloys, different heat treatment processes were designed in this study, and the influence of the cooling process on the damping property of M2052 alloy was systematically investigated. The results show that the step-cooling process significantly influenced the damping performance of M2052 alloy. Compared with M2052 alloy processed using air-cooling with an internal friction (tan δ) of 0.087 at a strain amplitude λ = 5 × 10−4, the damping capacity was improved by more than 49% through the step-cooling treatment. This was mainly because of the increment of manganese content of in the Mn-rich regions, which is caused by the spinodal decomposition on the low temperature side of the miscibility gap. Meanwhile, the step-cooling treatment significantly suppressed the precipitation of α-Mn, which reduced the negative effect of α-Mn on the damping capacity and kept the Mn content in the Mn-rich regions at a high level. The step-cooling treatment, a novel and effective microstructure control process, provides a new method for the efficient preparation of high-damping M2052 alloy.Keywords
Funding Information
- the Innovation Fund for Graduate students of Jiangxi Province
- Central Iron and Steel Research Institute
This publication has 26 references indexed in Scilit:
- A comparative study on microstructure and damping capacity of Mn-Cu based alloys with dendrite and equiaxial grainVacuum, 2019
- Orientation dependence of damping behavior in a Mn-Cu shape memory alloyScripta Materialia, 2019
- Mn segregation dependence of damping capacity of as-cast M2052 alloyMaterials Science and Engineering: A, 2016
- Microstructure and damping properties of MnCuNiFeCe alloyRare Metals, 2016
- The strengthening effect of spinodal decomposition and twinning structure in MnCu-based alloyMaterials Science and Engineering: A, 2014
- Holding temperature dependent variation of damping capacity in a MnCuNiFe damping alloyScripta Materialia, 2006
- INTERNAL FRICTION IN MANGANESE-COPPER AND MANGANESE-COPPER-ALUMINIUM ALLOYSLe Journal de Physique Colloques, 1987
- Structural studies on the alloying behaviour of ?-Mn and the development of a high damping capacity in Mn-Cu alloysJournal of Materials Science, 1980
- Decomposition of Gamma-Phase Manganese Copper AlloysJournal of Applied Physics, 1969
- The Mechanism of Damping in Manganese-Copper AlloysMetal Science Journal, 1968