为了探究单晶高温合金DD6热变形再结晶行为,采用Gleeble-1500热模拟试验机和电子背散射衍射系统(EBSD)研究了其力学性能及显微组织,以及再结晶的临界变形条件.结果表明,在实验温度范围内,单晶合金再结晶程度随变形温度增加而提高,随变形量增加以及变形速率降低而增加;再结晶的产生机制是由于合金相的不连续脱溶析出引起取向差的变化,产生晶粒的变化;在1090 ～ 1050℃,应变速率为0.1～1s-1范围内,合金变形量超过6％将会发生再结晶现象.
参考文献
| [1] | Argence D;Vernault C;Desvallees Y.MC-NG:a 4th generation single-crystal superalloy for future aeronautical turbine blades and vanes[A].,2000:829-837. |
| [2] | 胡壮麒,刘丽荣,金涛,孙晓峰.镍基单晶高温合金的发展[J].航空发动机,2005(03):1-7. |
| [3] | Diologent F;Caron P .On the creep behavior at 1033 K of new generation single-crystal superalloys[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2004(1/2):245-257. |
| [4] | C. M. F. RAE;R. C. REED .THE PRECIPITATION OF TOPOLOGICALLY CLOSE-PACKED PHASES IN RHENIUM-CONTAINING SUPERALLOYS[J].Acta materialia,2001(19):4113-4125. |
| [5] | C. Zambaldi;F. Roters;D. Raabe .Modeling and experiments on the indentation deformation and recrystallization of a single-crystal nickel-base superalloy[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2007(0):433-440. |
| [6] | Jie Meng,Tao Jin,Xiao-feng Sun,Zhuang-qi Hu.Surface recrystallization of a single crystal nickel-base superalloy[J].矿物冶金与材料学报,2011(02):197-202. |
| [7] | 卫平,李嘉荣,钟振纲.一种镍基单晶高温合金的表面再结晶研究[J].材料工程,2001(10):5-8. |
| [8] | 姚志浩,董建新,张麦仓.GH738高温合金热变形过程显微组织控制与预测Ⅰ.组织演化模型的构建[J].金属学报,2011(12):1581-1590. |
| [9] | 姚志浩,王秋雨,张麦仓,董建新.GH738高温合金热变形过程显微组织控制与预测Ⅱ.组织演化模型验证与应用[J].金属学报,2011(12):1591-1599. |
| [10] | Bond S D;Martin J W .Surface reerystallization in a single crystal nickel-based superalloy[J].Journal of Materials Science,1984,19(12):3867-3872. |
| [11] | Kusunoki K;Sumino K;Kawasaki Y et al.Effects of the amount of γ'and oxide content on the secondary recrystallization temperature of nickel-base superalloys[J].Metallurgical Transactions A,1990,21(02):547-555. |
| [12] | Schmidt R;Feller-Kniepmeier M .Effect of heat treatments on phase chemistry of the Nickel-Base superalloy SRR 99[J].Metallurgical Transactions A,1992,23(03):745-757. |
| [13] | Porter A;Ralph B .The recrystallization of nickel-base superalloy[J].Journal of Materials Science,1981,16(03):707-713. |
| [14] | Bond S D;Martin J W .Surface recrystallization in a single crystal nickel-based superalloy[J].Journal of Materials Science,1984,19(12):3867-3872. |
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%