P92钢625℃持久性能分段特征与各段中M23C6及Laves相相参数的定量变化研究
收稿日期: 2009-09-27
修回日期: 2010-01-27
网络出版日期: 2010-04-11
基金资助
国家自然科学基金项目 50674072和东方锅炉(集团)股份有限公司2009科技项目资助
STUDY ON THE MULTI–SEGMENT FEATURE OF 625 ℃ CREEP–RUPTURE PROPERTY AND THE QUATITATIVE CHANGE OF PHASE PARAMETERS OF M23C6 AND LAVES PHASES IN EACH SEGMENT OF P92 STEEL
Received date: 2009-09-27
Revised date: 2010-01-27
Online published: 2010-04-11
Supported by
Supported by National Natural Science Foundation of China (No.50674072) and Scientific Research Project of Dong Fang Boiler Group Corp. Ltd., 2009
研究了P92钢在625℃下加载应力与断裂时间关系曲线的分段特征以及各试样中M23C6及Laves相参数的定量变化. 结果表明, 根据该钢在625℃,110-180 MPa条件下的持久实验得到的应力-断裂时间关系曲线的变化趋势,可将该曲线分为高应力--短时段(180-150 MPa, 30-454 h)和低应力-长时段(140-110MPa, 2881-10122 h)两个特征段; 在高应力-短时段, M23C6相颗粒聚集与粗化占主导; 在低应力-长时段, Laves相及M23C6相颗粒并行聚集与粗化; 相成分、相含量及相间元素分配量(相参数)随时间及应力而变化.
彭志方 . P92钢625℃持久性能分段特征与各段中M23C6及Laves相相参数的定量变化研究[J]. 金属学报, 2010 , 46(4) : 429 -434 . DOI: 10.3724/SP.J.1037.2009.00653
In the present study, the multi–segment feature of stress vs rupture–time plot and the corresponding quatitative change of phase parameters of M23C6 and Laves in each segment were investigated for P92 steel samples subjected to 625 ℃ creep–rupture tests. The results indicate that the stress vs rupture–time plot obtained from the test results can be divided into two segments (higher stress level and shorter rupture time segment: 180—150 MPa/30—454 h, and lower stress level and longer rupture time segment: 140—110 MPa/2881—10122 h) respectively, and the microstructural evolution is closely related to the feature of each segment. In the higher stress level and shorter rupture time segment the M23C6 particles are coarsened, while in the lower stress level and longer rupture time segment both M23C6 and Laves phases are coarsened, but the latter is predominantly. The average composition, the amount and the elemental partitioning of each alloy phase called phase parameters can be determined by a multiphase separation method developed.
[1] Yang F. In: Chinese Society for Electrical Engineering, ed., Smposium on Sinicization of New Type Steels for 600MW/1000MW Ultra–Supercritical Units, Yang Zhou: China Electric Power Journal Net, 2009: 1
(杨富. 见: 中国电机工程学会主编, 600MW/1000MW超超临界机组新型钢国产化研讨会报告文集, 扬州: 中国电力期刊网, 2009: 1)
[2] Armaki H G, Maruyama K, Yoshizawa M, Igarashi M. Mater Sci Eng, 2008; A490: 66
[3] Maruyama K, Yoshimi K. J Press Vess Technol, 2007; 129:449
[4] Maruyama K, Lee J S, In: Shibli I A, Holdworth S R eds., Creep & Fracture in High Temperature Components–Design & Life Assessment Issues, Lancaster: DEStech Publications, 2005: 372
[5] Lee J S, Armaki H G, Maruyama K, Muraki T, Asahi H. Mater Sci Eng, 2006; A428: 270
[6] Peng Z F, Yang Z G, Yan G Z, Chen S G, Zhou Y G. In: Academic Committee of the Superalloys, CSM ed., High–Temperature Structural Materials for Power and Eergy Resource—Proceedings of 11th Annual Chinese Conference on Sueralloys, Shanghai: Metallurgical Industry Press, 2007: 666
(彭志方, 杨志刚, 阎光宗, 陈盛广, 周元贵. 见: 中国金属学会高温材料分会主编, 动力与能源用高温结构材料---第11届中国高温合金年会论文集, 上海: 冶金工业出版社, 2007: 666)
[7] Peng F F, Peng Z F, Chen F Y. In: Chinese Society for Electrical Engineering ed. Symposium on Sinicization of New Type Steels for 600MW/10MW Ultra–Supercritical Units, Yang Zhou: China Electric Power Journal Net, 2009: 178
(彭芳芳, 彭志方, 陈方玉. 见: 中国电机工程学会主编, 600MW/1000MW超超临界机组新型钢国产化研讨会报告文集, 扬州: 中国电力期刊网, 2009: 178)
[8] Peng Z F, Peng F F, Chen F Y. Electric Power Construction, 2009; 30(12): 1
(彭志方, 彭芳芳, 陈方玉. 电力建设, 2009; 30(12): 1)
[9] Peng Z F, Dang Y Y, Peng F F. Acta Metall Sin, 2010;46: 435
(彭志方, 党莹樱, 彭芳芳. 金属学报, 2010, 46: 435)
[10] Robertson D G. ECCC Data Sheets 2005. http://www.ommi. co. uk/etd/eccc/ advanced creep/index.htm
[11] Kuai C G, Peng Z F. Acta Metall Sin, 2008; 44: 897
(蒯春光, 彭志方. 金属学报, 2008; 44: 897)
[12] Maruyama K, Sawada K, Koike J. ISIJ Int, 2001; 41: 641
[13] Abe F. Sci Technol Adv Mater, 2008; 9: 15
/
| 〈 |
|
〉 |
