NiAl-30.9Cr-3Mo-0.1Dy合金的微观结构与高温氧化行为
The Microstructure and Oxidation Behavior for NiAl-30.9Cr-3Mo-0.1Dy Alloy at High Temperature
查看参考文献18篇
|
文摘
|
研究了NiAl-30.9Cr-3Mo-0.1Dy合金的微观组织以及在1300～1500K空气中的恒温氧化行为.实验结果表明,加入微量Dy使合金组织细化,表现为单位体积中共晶团数目增多,Cr(Mo)层片间距减小和Cr(Mo)层片细化.增韧相(Cr(Mo))与基体相NiAl的互相析出,有利于层状的氧化膜形成,进而提高合金的抗高温氧化性能.合金在1500K氧化动力学曲线基本上遵循抛物线关系;而氧化温度在1350～1450K之间,氧化动力学曲线很好地符合立方抛物线关系;当温度为1300K时,氧化动力学曲线则符合五次方关系.立方抛物线氧化速率常数低于未合金化NiAl的抛物线氧化速率常数,并随着温度降低和氧化时间的延长而逐渐变小,合金的氧化表观激活能为205kJ/mol. |
|
其他语种文摘
|
The microstructure and isothermal oxidation behavior of NiAl-30. 9Cr-3Mo-0. IDy alloy at temperature range of 1300～1500K in air atmosphere was investigated. The results revealed that the microstructure of tested alloy was fined by doping Dy, which caused the more quantity of grain cells and the finer spacing between Cr(Mo) fibers as well as smaller Cr(Mo) rods. The strengthening phase Cr(Mo) and matrix NiAl phase reciprocally precipitated in each other, which was beneficial to form the duplex-layered oxidation scale and improve the anti-oxidation properties at high temperature. The Kinetics of isothermal oxidation of NiAl-30. 9Cr-3Mo-0. IDy alloy at 1500K obeyed parabolic rule, and followed quintic equation at 1300K, and the others obeyed the cubic relation. The oxidation rate constants decreased with the decreasing temperature and elongation of exposure time. The activation energy of isothermal oxidation was calculated about 205kJ/mol. |
|
来源
|
航空材料学报
,2005,25(2):6-11 【扩展库】
|
|
关键词
|
金属间化合物
;
NiAl
;
组织
;
高温氧化
|
|
地址
|
中国科学院金属研究所, 辽宁, 沈阳, 110016
|
|
语种
|
中文 |
|
文献类型
|
研究性论文 |
|
ISSN
|
1005-5053 |
|
学科
|
金属学与金属工艺;航空 |
|
文献收藏号
|
CSCD:1911126
|
参考文献 共
18
共1页
|
|
1.
RYBICKI G C. Effect of θ-α-Al2O3 transformation on the oxidation behavior of β-NiAl+Zr[J].
Oxide Met,1989,31:275-294
|
被引
3
次
|
|
|
|
|
2.
Cui C Y. Preliminary investigation of directionally solidified NiAl-28Cr-5.
Mater Letters,2000,43(5/6):303-309
|
被引
11
次
|
|
|
|
|
3.
WITTENBERGER J D. Effects of minor alloying additions on the microstructure.
Effects of minor alloying additions on the microstructure, toughness and creep strength of directionally solidified NiAl-31Cr-3Mo,2001:1-29
|
被引
1
次
|
|
|
|
|
4.
徐春梅. NiAl-28Cr-5Mo-1Hf合金的高温氧化行为研究[J].
金属学报,2002,137:857-861
|
被引
3
次
|
|
|
|
|
5.
WANG F H. Oxidation behavior and scale morphology of normal-grained CoCrAl alloy and it's sputtered microcrystalline coating[J].
Mater Sci Eng. A,1990,129:279-292
|
被引
8
次
|
|
|
|
|
6.
LOU H Y. High-temperature oxidation resistance of sputtered micro-grain superalloy K38G[J].
Oxide Met,1992,38:299-308
|
被引
3
次
|
|
|
|
|
7.
TANG Z L. Oxidation resistance of sputtered Ni3(Al.
Oxide Met,1997,49:511-528
|
被引
1
次
|
|
|
|
|
8.
YOUNG E W A. The use of a 18O tracer and rutherford backscattering sprctrometry to study the oxidation mechanism of NiAl[J].
Solid State Ionics,1986,16:39-56
|
被引
3
次
|
|
|
|
|
9.
Guo J T. Effect of NiAl microcrystalline coating on the high temperature oxidation behavior of NiAl-28Cr-5Mo-1Hf alloy[J].
Oxide Met,2002,58:457-468
|
被引
5
次
|
|
|
|
|
10.
郭建亭. 稀土元素在金属间化合物（铝化物）中的作用.
材料工程,2002(1):36-43
|
被引
15
次
|
|
|
|
|
11.
ZHANG G Y. Improvement of oxidation resistance of a NiAl eutectic alloy doping with Dy[J].
Submitted to Scripta Metall:in press
|
被引
1
次
|
|
|
|
|
12.
李美栓. 金属的高温腐蚀[M].
金属的高温腐蚀,2001
|
被引
156
次
|
|
|
|
|
13.
BRUMM M W. On the oxidation mechanism of alumina formers [J].
Corros Sci,1992,33:1677-1692
|
被引
29
次
|
|
|
|
|
14.
PERGGER B A. On the oxidation behavior of NiAl alloys[J].
Mater Sci Eng. A,1992,153:567-578
|
被引
1
次
|
|
|
|
|
15.
GRABKE H J. The oxidation of Bi-phase Ni-Al intermetallics[J].
Oxide Met,1991,35(3/4):199-211
|
被引
2
次
|
|
|
|
|
16.
DOYCHACK J. Oxidation behavior of high-temperature intermetallics[A].
Oxidation behavior of high-temperature intermetallics,1995
|
被引
1
次
|
|
|
|
|
17.
NESBITL J A. High temperature oxidation of intermetallics.
MRS Symposia Proceedings,Vol288,1993:107-118
|
被引
3
次
|
|
|
|
|
18.
Jin Huiming. Rare earth effects on adhesion of Cr2O3 oxide scale formed on surface of CoCrAl alloy[J].
Journal Rare Earths,2001(1):34-39
|
被引
15
次
|
|
|
|
|
了解气象卫星更多信息，请访问