Acta Metallurgica Sinica (English Letters) ›› 2019, Vol. 32 ›› Issue (5): 659-667.DOI: 10.1007/s40195-018-0784-7
• Orginal Article • Previous Articles Next Articles
Xin-Tong Lian1,2, Wen-Ru Sun1(), Fang Liu1, Dan-Dan Zheng1, Xin Xin1
Received:
2018-03-21
Revised:
2018-04-23
Online:
2019-05-10
Published:
2019-05-27
Xin-Tong Lian, Wen-Ru Sun, Fang Liu, Dan-Dan Zheng, Xin Xin. Effects of Phosphorus and Iron on Microstructures and Mechanical Properties in NiCrFe-Based Alloys[J]. Acta Metallurgica Sinica (English Letters), 2019, 32(5): 659-667.
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P | Cr | Fe | C | Ni | |
---|---|---|---|---|---|
Alloy 1 | 0.025 | 17.17 | 15.2 | 0.039 | Bal. |
Alloy 2 | 0.09 | 17.42 | 15.8 | 0.041 | Bal. |
Alloy 3 | 0.025 | 17.11 | 30.5 | 0.044 | Bal. |
Alloy 4 | 0.09 | 17.32 | 30.1 | 0.040 | Bal. |
Table 1 Chemical compositions of different NiCrFe-based alloys (mass fraction, %)
P | Cr | Fe | C | Ni | |
---|---|---|---|---|---|
Alloy 1 | 0.025 | 17.17 | 15.2 | 0.039 | Bal. |
Alloy 2 | 0.09 | 17.42 | 15.8 | 0.041 | Bal. |
Alloy 3 | 0.025 | 17.11 | 30.5 | 0.044 | Bal. |
Alloy 4 | 0.09 | 17.32 | 30.1 | 0.040 | Bal. |
Alloy No. | Alloy 1 | Alloy 2 | Alloy 3 | Alloy 4 |
---|---|---|---|---|
Yield strength (MPa) | 302 | 297 | 239 | 220 |
Tensile strength (MPa) | 416 | 407 | 393 | 384 |
Elongation (%) | 64 | 61 | 56 | 55 |
Table 2 Tensile properties of alloys at the temperature of 650 °C
Alloy No. | Alloy 1 | Alloy 2 | Alloy 3 | Alloy 4 |
---|---|---|---|---|
Yield strength (MPa) | 302 | 297 | 239 | 220 |
Tensile strength (MPa) | 416 | 407 | 393 | 384 |
Elongation (%) | 64 | 61 | 56 | 55 |
Alloy No. | Alloy 1 | Alloy 2 | Alloy 3 | Alloy 4 |
---|---|---|---|---|
Life (h) | 326 | 679 | 244 | 271 |
Elongation (%) | 25 | 30 | 30 | 23 |
Table 3 Creep rupture life and elongation of NiCrFe-based alloys at 650 °C with an initial stress of 150 MPa
Alloy No. | Alloy 1 | Alloy 2 | Alloy 3 | Alloy 4 |
---|---|---|---|---|
Life (h) | 326 | 679 | 244 | 271 |
Elongation (%) | 25 | 30 | 30 | 23 |
Fig. 4 Fractographs of the samples crept to rupture at 650 °C with an initial stress of 150 MPa: a, b alloy 1; c, d alloy 2; e, f alloy 3; g, h alloy 4
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