用电子探针对Ti-45Al-7Nb-0.15B-0.7W的铸态和经过热处理之后的微观组织进行了观察,研究热处理工艺对该合金微观组织的影响.结果表明:该合金的铸态组织经过热等静压和均匀化处理后,其晶团尺寸减小,片层组织更为完整;Ti-45Al-7Nb-0.15B-0.7W合金的α相转变温度在1280-1295℃之间.该合金在超过1295℃的温度进行热处理时,其微观组织由近片层组织转变为全片层组织.
参考文献
| [1] | Wang Y;Wang JN;Yang J;Zhang B .Control of a fine-grained microstructure for cast high-Cr TiAl alloys[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2005(1/2):235-239. |
| [2] | Yonggang Jin;J. N. Wang;Jie Yang;Yong Wang .Microstructure refinement of cast TiAl alloys by β solidification[J].Scripta materialia,2004(2):113-117. |
| [3] | T. Novoselova;S. Malinov;W. Sha .Experimental study of the effects of heat treatment on microstructure and grain size of a gamma TiAl alloy[J].Intermetallics,2003(5):491-499. |
| [4] | A.DLOUHY;K. KUCHAROVA .Creep and microstructure of near-gamma TiAl alloys[J].Intermetallics,2004(7/9):705-711. |
| [5] | Toshimitsu Tetsui;Kentaro Shindo;Satoru Kobayashi .Strengthening a high-strength TiAl alloy by hot-forging[J].Intermetallics,2003(4):299-306. |
| [6] | S. LI;X. SU;Y. HAN .Simulation of hot deformation of TiAl based alloy containing high Nb[J].Intermetallics,2005(3/4):323-328. |
| [7] | F. APPEL;M. OEHRING;J.D.H. PAUL .Physical aspects of hot-working gamma-based titanium aluminides[J].Intermetallics,2004(7/9):791-802. |
| [8] | Edward A. Loria .Quo vadis gamma titanium aluminide[J].Intermetallics,2001(12):997-1001. |
| [9] | 黄劲松,刘咏,贺跃辉,张永红,刘彬,张伟,何晓宇,黄伯云.Ti-Al-Nb-W-B合金不同工艺处理状态的组织演变及钨的作用[J].金属热处理,2006(07):13-17. |
| [10] | 黄劲松,刘咏,贺跃辉,张永红,刘彬,任斌,黄伯云.热处理工艺对Ti-45Al-7Nb-0.15B-0.4W显微组织的影响[J].中国有色金属学报,2005(03):344-351. |
| [11] | 黄劲松,张永红,刘彬,刘咏,贺跃辉,黄伯云.少量钨对铸态及均匀化处理态Ti-Al-Nb-B-W合金微观组织的影响[J].稀有金属材料与工程,2006(08):1199-1203. |
| [12] | 黄劲松;张永红;刘彬.少量钨对1265℃,18 h热处理后TiAl基合金的微观组织的影响[J].材料科学与工艺,2006(12) |
| [13] | D. Hu .Effect of boron addition on tensile ductility in lamellar TiAl alloys[J].Intermetallics,2002(9):851-858. |
| [14] | Beschliesser M.;Chatterjee A.;Lorich A.;Knabl W.;Kestler H.;Dehm G. Clemens H. .Designed fully lamellar microstructures in a gamma-TiAl based alloy: adjustment and micro, structural changes upon long-term isothermal exposure at 700 and 800 degrees C[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2002(0):124-129. |
| [15] | Chen G L;Zhang W J;Liu Z C.[A].TMS,Warrendale,1999:37. |
| [16] | 郑运荣,于熙泓,马书伟,汪小平.Ru对铸造Ti-47Al合金显微组织的影响[J].航空材料学报,1999(01):17-21. |
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%