研究了固溶处理温度对耐蚀马氏体时效钢力学性能的影响。研究结果表明,800℃固溶处理后的组织遗传了锻态的晶粒形态、尺寸及高密度缺陷,使固溶处理后的马氏体也具有高的缺陷密度,并增加了组织中残余/逆转变奥氏体的含量,从而使材料具有较高的强韧性。较高温度固溶处理奥氏体发生回复和再结晶,其缺陷密度的降低使最终马氏体时效强化效应下降,而且残余/逆转变奥氏体量也下降,从而使材料的韧性水平下降。该试验钢固溶处理温度低于传统的马氏体时效不锈钢的固溶处理温度。
The effect of solution temperature on mechanical properties of corrosion-resistant maraging steel was investigated.The results show that the microstructure after solution treatment of 800 ℃ is inherited grain shape,size and high defects density of the forging state.After the solution heat treatment,the martensite also has a high defect density,and the content of the residual/reversed austenite is increased,so the material has a higher combination of strength and toughness.Recovery and recrystallization of austenite lower the defect density when the steel is solutionized at high temperature,which weakens the maraging strengthening effect and decreases the residual/reverse austenite,thereby the level of toughness declines.The solution temperature of the corrosion-resistant maraging steel is lower than the traditional maraging stainless steel.
参考文献
| [1] | Krasnikova I;Man T A;Drobot A V et al.Effect of Quenching Parameters on the Properties of Maraging Steel 05Khl2K14N5M5T-VD[J].Metal Science and Heat Treat- ment,1983,25(04):294. |
| [2] | LIU K;SHAN Y Y;YANG Z Y .Effect of Heat Treatment on Prior Grain and Mechanical Property of a Maraging Stain- less Steel[J].Journal of Materials Science and Technology,2006,22(06):769. |
| [3] | Garrison W.The Effects of Retained Austenite on the Tensile Properties and Toughness of Ultra-High Strength Martensitic Precipitation Hardened Stainless Steels[M].Pennsylvania:Carnegie-Mellon Univ Pittsburgh Pa Dept of Materials Science and Engineering,1998 |
| [4] | Ryzhak S S;Tarasenko L V;Zhegina I P et al.Effect of Phase Composition and Structure of Maraging Steel 00KhllN10M2T on Its Susceptibility to Embrittlement When Aged at Low Temperatures[J].Metal Science and Heat Treatment,1981,23(09):659. |
| [5] | II'ina V P;Troitskaya V A .Effect of Low-Temperature Quenching on the Microstructure and Capacity for Corrosion Cracking of Steel 03KhllN10M2T-VD[J].Metal Science and Heat Treatment,2000,42(02):53. |
| [6] | Sadovskii V D;Bogacheva G N;Umova V M .Recrystalliza- tion of Maraging Alloys[J].Metal Science and Heat Treat- ment,1969,11(04):258. |
| [7] | Ryzhak S S;Belyakov L N;Potak Ya M et al.Some Rules for Phase Transformations in 000N18K9MST steel[J].Metal Science and Heat Treatment,1972,14(02):150. |
| [8] | Nikol'skaya V L;Pevzner L M;Orekhov N G .Effect of Re tained Austenite on the Properties of Cast Stainless Steels[J].Metal Science and Heat Treatment,1975,17(09):763. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%