制备不同P、Al、Cr含量的Thermo-Span合金,研究了磷对其持久性能的影响.结果表明,在1093℃固溶处理后,一种含磷相在合金的晶界和晶内析出;在1160℃固溶处理后,晶界上的含磷相消失,但是仍有少量在晶内析出.磷对合金持久性能的影响决定于其存在状态.当磷局部过度偏析而导致含磷相析出时,合金的持久寿命显著降低;当磷以原子态在局部适度偏聚时,合金的持久寿命显著提高.
参考文献
| [1] | S.R.Guo,W.R.Sun,D.Z.Lu,Effect of minor elements on microstructure and mechanical properties of IN718 alloy,in:Superalloys 718,625,706 and Various Derivatives (Warrendale,PA,TMS-AIME,1997) p.521-530 |
| [2] | W.R.Sun,S.R.Guo,D.Z.Lu,Effect of phosphorus on the microstructure and stress rupture properties in an Fe-Ni-Cr base superalloy.Metall.,Mater Trans,28A,649(1997) |
| [3] | W.Sun,S.R.Guo,Z.Q.Hu,Effect of phosphorus on the δ-Ni3Nb phase precipitation and stress rupture properties in alloy 718,Mater.Sci.Eng.,A247,173(1998) |
| [4] | L.Y.Zhu,A new way to improve superalloys,edited by S.D.Antolovich,Superalloys (Warrendale,PA,TMS-AIME,1992) p.145-154 |
| [5] | H.W.Song,S.R.Guo,Z.Q.Hu,Beneficial effect of phosphorus on the creep behavior of Inconel 718,Scripta Mater.,41,215(1999) |
| [6] | SONG Hongwei,Effect of phosphorus on the microstructure and mechanical properties in superalloys,Ph.D Thesis,Institute of Metal Research,The Chinese Academy of Sciences (1999)(宋洪伟,磷对IN718合金组织演化和力学性能的影响,博士学位论文,中国科学院金属研究所(1999)) |
| [7] | SUN Wenru,Effect of trace elements P,S and Si on the solidification,segregation,microstructure and mechanical properties in superalloys,Ph.D Thesis,Institute of Metal Research,The Chinese Academy of Sciences (1996)(孙文儒,微量元素P,S和Si对IN718和GH761合金凝固过程,元索偏析,组织结构和力学性能的影响,博士学位论文,中国科学院金属研究所(1996)) |
| [8] | C.L.Braint,Grain boundary segregation in the Ni-base alloy 182,Surf Interface Anal.,16,552(1990) |
| [9] | SUN Yaru,SUN Wenru,SUN Xiaofeng,GUO Shouren,LIU Zheng,HU Zhuangqi,The effect of Al,Cr on properties of Thermo-Span superalloy,Rare Metal Materials and Engineering,36,1788(2007)(孙雅茹,孙文儒,孙小峰,郭守仁,刘正,胡壮麒,降Cr提Al对Thermo-Span合金力学性能的影响,稀有金属材料与工程,36,1788(2007)) |
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%