超超临界锅炉用HR3C钢的σ 相析出行为研究*
STUDY ON σ PHASE PRECIPITATION OF HR3C STEEL USED IN ULTRA-SUPERCRITICAL BOILER
Accepted date: 2015-05-20
Online published: 2015-06-23
Supported by
Supported by National Natural Science Foundation of China (Nos.51171037 and 51134013)
王慧,程从前,赵杰,杨鸷 . 超超临界锅炉用HR3C钢的σ 相析出行为研究*[J]. 金属学报, 2015 , 51(8) : 920 -924 . DOI: 10.11900/0412.1961.2015.00028
HR3C steel is a new type of austenitic heat-resistant steel which has been widely used for super-heater and re-heater tubes in the ultra-supercritical (USC) boiler. The mechanical properties of HR3C steel were dependent on the stability of the microstructure, particularly the large amount of precipitates formed during service. The precipitation of s phase in HR3C steel during long-term aging for 2000 h at temperature of 700 and 750 ℃ was investigated by OM, SEM and TEM. The phase calculation method was applied to understand the factors influencing the precipitation. After 1000 h of the aging duration, irregular mass second phase was found to precipitate at the grain boundary, followed by the subsequent increasing and coarsening with time. The constituent elements of the phases were determined as Fe and Cr through SEM equipped with EDS. Further SAED analysis results led to the confirmation that these phases were basically s-FeCr compound. Combined with the prediction made through New PHACOMP method, the microstructure or phase structure in initial state may affect the subsequent precipitation behavior.
Key words： HR3C steel; aging; s phase; phase computation; microstructure
| [1] | Yang F,Zhang Y L,Ren Y N,Li W M. New Heat-Resistant Steels Welding. Beijing: China Electric Power Press, 2006: 143 (杨 富,章应霖,任永宁,李为民. 新型耐热钢焊接. 北京: 中国电力出版社, 2006: 143) |
| [2] | Zhou R C, Fan C X. Electric Power, 2005; 38(8): 41 (周荣灿, 范长信. 中国电力, 2005; 38(8): 41) |
| [3] | Tang L P. Appl Energy Technol, 2007; (10): 20 (唐利萍. 应用能源技术, 2007; (10): 20) |
| [4] | Shirzadi A, Jackson S. Structural Alloys for Power Plants: Operational Challenges and High-Temperature Materials. Cambridge: Woodhead Publishing , 2014: 105 |
| [5] | Sawaragi Y, Teranishi H, Makiura H, Miura M, Kubota M. Sumitomo Met, 1985; 37(2): 166 |
| [6] | Bai X, Pan J, Chen G, Liu J, Wang J, Zhang T, Tang W. Mater Sci Technol-Lond, 2014; 30(2): 205 |
| [7] | Wang B, Liu Z D, Cheng S C, Liu C M, Wang J Z. J Iron Steel Res Int, 2014; 21: 765 |
| [8] | Sandstrm R, Farooq M, Zurek J. Mater Res Innov, 2013; 17: 355 |
| [9] | Igarashi M. In: Yagi K, Merkling G, Kern T U, Irie H, Warlimont W eds., Landolt-Bornstein: Numerical Data and Functional Relationships in Science and Technology, Group VIII: Advanced Materials and Technologies. Vol.2, Berlin: Springer-Verlag, 2004: 292 |
| [10] | Iseda A, Okada H, Semba H, Igarashi M. Energy Mater, 2007; 2: 199 |
| [11] | Yin Z, Cai H, Liu H G. Proc Chin Soc Electrical Eng, 2011; 31(29): 103 (殷 尊, 蔡 辉, 刘鸿国. 中国电机工程学报, 2011; 31(29) : 103 ) |
| [12] | Fang Y Y, Zhao J, Li X N. Acta Metall Sin, 2010; 46: 844 (方园园, 赵 杰, 李晓娜. 金属学报, 2010; 46: 844) |
| [13] | Hu P, Wang Z W, Li Z G. Guangdong Electric Power, 2010; 23(5) : 16 (胡 平, 王志武, 李正刚. 广东电力, 2010; 23(5): 16) |
| [14] | Sourmail T, Bhadeshia H K D H. Mater Sci Technol, 2005; 36: 23 |
| [15] | Sahlaoui H, Sidhom H. Metall Mater Trans, 2013; 44: 3077 |
| [16] | Talbot A M, Furman D E. Trans ASM, 1953; 45: 429 |
| [17] | Zhang J S, Cui H, Hu Z Q. Mater Sci Eng, 1993; 11(3): 1 (张济山, 崔 华, 胡壮麒. 材料科学与工程, 1993; 11(3): 1) |
| [18] | Guo J T. Physics, 1982; 11: 661 (郭建亭. 物理, 1982; 11: 661) |
| [19] | Liu Y, Deng B, Chen J S, Zhong Z Y. J Mater Eng, 1997; 7: 23 (刘 瑛, 邓 波, 陈金生, 仲增墉. 材料工程, 1997; 7: 23) |
| [20] | Fang Y Y. Master Thesis, Dalian University of Technology, 2010 (方园园. 大连理工大学硕士学位论文, 2010) |
| [21] | Masuyama F. ISIJ Int, 2001; 41: 612 |
/
| 〈 |
|
〉 |
