对2205双相不锈钢进行900℃保温不同时间的时效处理并对室温V型缺口冲击功进行了测定.采用定量金相,扫描电镜(SEM),能谱分析(EDS)和透射电镜(TEM)等实验技术,对2205双相不锈钢经不同时效处理后的显微组织进行了分析,结果表明,在900℃时效处理的条件下,2205双相不锈钢组织由铁素体、奥氏体以及σ相组成;随着时效时间的延长,σ相的析出量逐渐增多,该钢种的冲击功随时效时间的延长显著降低,正是由于组织中脆性相σ相在α/γ晶界析出所造成;而且,2205钢的冲击功对σ相的含量非常敏感,当组织中σ相的含量达到5.32vol%时,其冲击功仅为32J.
参考文献
[1] | Henrik Sieurin;Rolf Sandstrom .Sigma phase precipitation in duplex stainless steel 2205[J].Materials Science and Engineering,2007,444:271-276. |
[2] | Kwang Min Lee;Hoon Sung Cho;Dap Chun Choi .Effect of isothermal treatment of SAF 2205 duplex stainless steel on migration of δ/γ interface boundary and growth of austenite[J].Journal of Alloys and Compounds,1999,285:156-161. |
[3] | Chen T H;Yang J R .Effects of solution treatment and continuous cooling on σ phase precipitation in a 2205 duplex stainless steel[J].Materials Science and Engineering,2001,311:28-41. |
[4] | Chen T H;Weng K L;Yang J R .The effect of hish-temperature exposure on the microstructural stability and toughness property in a 2205 duplex stainless steel[J].Materials Science and Engineering,2002,338:259-270. |
[5] | Elmer J W;Palmer T A;Specht E D .In situ observations of sisma phase dissolution in 2205 duplex stainless steel using synchrotron X-ray diffraction[J].Materials Science and Engineering,2007,459:151-155. |
[6] | Leif Karlsson .Intermetallic phase precipitation in duplex stainless steels and weld metals[J].Welding Research Council Bulletin,1999(438):1-23. |
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%