Acta Metallurgica Sinica (English Letters) ›› 2018, Vol. 31 ›› Issue (7): 706-712.DOI: 10.1007/s40195-018-0703-y
Special Issue: 2018年钢铁材料专辑
• Orginal Article • Previous Articles Next Articles
Jianguo Chen1, Yongchang Liu1, Yantong Xiao2, Yihuan Liu2, Chenxi Liu1(), Huijun Li1
Received:
2017-10-31
Revised:
2017-12-20
Online:
2018-07-10
Published:
2018-06-06
Jianguo Chen, Yongchang Liu, Yantong Xiao, Yihuan Liu, Chenxi Liu, Huijun Li. Improvement of High-Temperature Mechanical Properties of Low-Carbon RAFM Steel by MX Precipitates[J]. Acta Metallurgica Sinica (English Letters), 2018, 31(7): 706-712.
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C (%) | N (%) | Cr (%) | W (%) | Mn (%) | Si (%) | V (%) | Ta (%) | |
---|---|---|---|---|---|---|---|---|
1# | 0.06 | 0.02 | 8.91 | 1.73 | 0.37 | 0.05 | 0.22 | 0 |
2# | 0.04 | 0.02 | 8.93 | 1.71 | 0.44 | 0.04 | 0.22 | 0.073 |
Table 1 Chemical compositions of the RAFM steels in wt%
C (%) | N (%) | Cr (%) | W (%) | Mn (%) | Si (%) | V (%) | Ta (%) | |
---|---|---|---|---|---|---|---|---|
1# | 0.06 | 0.02 | 8.91 | 1.73 | 0.37 | 0.05 | 0.22 | 0 |
2# | 0.04 | 0.02 | 8.93 | 1.71 | 0.44 | 0.04 | 0.22 | 0.073 |
Fig. 1 TEM images of RAFM steels before creep tests: a, b M23C6 of 1# specimen (without Ta), c MX of 1# specimen (without Ta), d, e M23C6 of 2# specimen (with 0.073% Ta), f MX of 2# specimen (with 0.073% Ta)
Fig. 6 TEM images of RAFM steels after creep tests: a, b M23C6 of 1# specimen (without Ta) and 2# specimen (with 0.073% Ta) after 550 °C and 220 MPa, c M23C6 and MX of 1# specimen (without Ta) after 550 °C and 180 MPa, d, e M23C6 and MX of 2# specimen (with 0.073% Ta) after 550 °C and 180 MPa, f, g electron diffraction pattern of M23C6 and MX
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