J. Mater. Sci. Technol. ›› 2018, Vol. 34 ›› Issue (5): 774-781.DOI: 10.1016/j.jmst.2017.05.007
• Orginal Article • Previous Articles Next Articles
Xiaofeng Hua(), Yubin Duab, Desheng Yana, Lijian Ronga
Received:
2016-12-13
Revised:
2017-01-10
Accepted:
2017-01-17
Online:
2018-05-10
Published:
2018-05-04
Xiaofeng Hu, Yubin Du, Desheng Yan, Lijian Rong. Effect of Cu content on microstructure and properties of Fe-16Cr-2.5Mo damping alloy[J]. J. Mater. Sci. Technol., 2018, 34(5): 774-781.
Experimental alloys | Cr | Mo | Cu | C | O | N | S | P | Fe |
---|---|---|---|---|---|---|---|---|---|
0Cu | 15.69 | 2.54 | 0.01 | 0.005 | 0.0024 | 0.0025 | 0.002 | 0.007 | Bal. |
0.25Cu | 15.79 | 2.56 | 0.27 | 0.005 | 0.0030 | 0.0025 | 0.001 | 0.006 | Bal. |
0.5Cu | 15.77 | 2.51 | 0.51 | 0.005 | 0.0028 | 0.0024 | 0.001 | 0.006 | Bal. |
1.0Cu | 15.92 | 2.52 | 1.01 | 0.006 | 0.0025 | 0.0028 | 0.002 | 0.006 | Bal. |
2.0Cu | 16.04 | 2.53 | 2.01 | 0.005 | 0.0023 | 0.0026 | 0.003 | 0.010 | Bal. |
Table 1 Chemical compositions of experimental Fe-16Cr-2.5Mo alloys (mass%).
Experimental alloys | Cr | Mo | Cu | C | O | N | S | P | Fe |
---|---|---|---|---|---|---|---|---|---|
0Cu | 15.69 | 2.54 | 0.01 | 0.005 | 0.0024 | 0.0025 | 0.002 | 0.007 | Bal. |
0.25Cu | 15.79 | 2.56 | 0.27 | 0.005 | 0.0030 | 0.0025 | 0.001 | 0.006 | Bal. |
0.5Cu | 15.77 | 2.51 | 0.51 | 0.005 | 0.0028 | 0.0024 | 0.001 | 0.006 | Bal. |
1.0Cu | 15.92 | 2.52 | 1.01 | 0.006 | 0.0025 | 0.0028 | 0.002 | 0.006 | Bal. |
2.0Cu | 16.04 | 2.53 | 2.01 | 0.005 | 0.0023 | 0.0026 | 0.003 | 0.010 | Bal. |
Fig. 1. Optical microstructures and grain sizes of Fe-16Cr-2.5Mo based alloys with different Cu contents after being annealed at 1000 °C for 1 h followed by AC: (a) 0Cu, (b) 0.25Cu, (c) 0.5Cu, (d) 1.0Cu, (e) 2.0Cu, (f) the variation of grain size by experimental alloys with different Cu contents.
Fig. 2. TEM micrographs of experimental alloys with different Cu contents annealed at 1000 °C for 1 h followed by AC: (a) 0Cu, (b) 0.25Cu, (c) 0.5Cu, (d) 1.0Cu, (e) 2.0Cu.
Fig. 5. Experimental and S-B curves for damping capacity Q-1 with strain amplitude ε for the Fe-16Cr-2.5Mo based alloys with 0% and 1.0% Cu contents respectively.
Fig. 8. SEM fracture morphology of tensile and impact specimens of annealed Fe-16Cr-2.5Mo based damping alloys: tensile specimen fracture morphology of 0Cu alloy (a), 1.0Cu alloy (b) and 2.0Cu alloy (c); impact specimen fracture morphology of 2.0Cu alloy (d).
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