采用等温恒应变速率热压缩试验研究9%Cr耐热钢等轴锻态组织1000～1300℃、应变速率0.005～5s-1、50%变形程度条件下的热变形行为,分析热变形参数对应力-应变曲线和微观组织演变机理及规律的影响,并建立该合金不同应变条件下的热加工图.结果表明:9%Cr耐热钢突破传统始锻温度控制在1200℃左右的现状,采用适当提高热变形温度、增大应变速率的热变形新工艺,可以获得良好的组织和性能,并能够有效地防止裂纹的产生.
参考文献
| [1] | J. C. Vaillant;B. Vandenberghe;B. Hahn;H. Heuser;C. Jochum .T/P23, 24, 911 and 92: New grades for advanced coal-fired power plants - Properties and experience[J].International Journal of Pressure Vessels and Piping,2008(1/2):38-46. |
| [2] | Ahmed Shibli;Fred Starr .Some aspects of plant and research experience in the use of new high strength martensitic steel P91[J].International Journal of Pressure Vessels and Piping,2007(1/2):114-122. |
| [3] | Vyrostkova A;Homolova V;Pecha J;Svoboda M .Phase evolution in P92 and E911 weld metals during ageing[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2008(1/2):289-298. |
| [4] | G. Dimmler;P. Weinert;E. Kozeschnik .Quantification of the Laves phase in advanced 9-12 percent Cr steels using a standard SEM[J].Materials Characterization,2003(5):341-352. |
| [5] | Klueh RL;Nelson AT .Ferritic/martensitic steels for next-generation reactors[J].Journal of Nuclear Materials: Materials Aspects of Fission and Fusion,2007(1/3):37-52. |
| [6] | MCQUEEN H J .Development of dynamic recrystallization[J].Materials Science and Engineering A,2004,387-389(15):203-208. |
| [7] | BARRABES S R;KASSNER M E;PEREZ-PRADO M T et al.Geometric dynamic recrystallization in a-zirconium at elevated temperature[J].Materials Science Forum,2004,467-470:1145-1150. |
| [8] | M.E. Kassner;S.R. Barrabes .New developments in geometric dynamic recrystallization[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2005(0):152-155. |
| [9] | 曹金荣,刘正东,程世长,杨钢,谢建新.T122耐热钢热变形加工图及热成形性[J].北京科技大学学报,2007(12):1204-1208. |
| [10] | TAN S P;WANG Z H;CHENG S C et al.Processing maps and hot workability of super304H austenitic heat-resistant stainless steel[J].Materials Science and Engineering A,2009,517(1-2):312-315. |
| [11] | Zeman A;Debarberis L;Kocik J;Slugen V;Keilova E .Microstructural analysis of candidate steels pre-selected for new advanced reactor systems[J].Journal of Nuclear Materials: Materials Aspects of Fission and Fusion,2007(2/3):259-267. |
| [12] | WANG B Z;FU W T;LV Z Q et al.Study on hot deformation behavior of 12%Cr ultra-super-critical rotor steel[J].Materials Science and Engineering A,2008,487(1-2):108-113. |
| [13] | F. Abe;M. Taneike;K. Sawada .Alloy design of creep resistant 9Cr steel using a dispersion of nano-sized carbonitrides[J].International Journal of Pressure Vessels and Piping,2007(1/2):3-12. |
| [14] | H. J. McQueen;M. E. Kassner .Comments on 'a model of continuous dynamic recrystallization' proposed for aluminum[J].Scripta materialia,2004(5):461-465. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%