| 时效对JN1奥氏体钢超低温断裂韧度的影响 |
| |
| 引用本文： | 刘世程.时效对JN1奥氏体钢超低温断裂韧度的影响[J].材料热处理学报,1999(3). |
| |
| 作者姓名： | 刘世程 |
| |
| 作者单位： | 大连铁道学院材料科学与工程系 |
| |
| 摘 要： | ＪＮ１ 奥氏体钢１３４８Ｋ固溶处理与９２３ 、９７３ 、１０７３Ｋ 时效５ｈ 后，４Ｋ 及７７Ｋ 断裂韧度测定结果表明，该钢有明显的时效脆化倾向。组织观察及Ｘ 射线衍射结果确认，时效脆化是Ｍ２３Ｃ６ 型碳化物沿晶界及退火孪晶界析出造成的。
|
| 关 键 词： | 奥氏体钢 超低温断裂韧度 时效脆化 晶界析出 |
Effect of Aging on Fracture Toughness at Cryogenic Temperature in JN1 Austenitic Steel |
| |
| Liu Shicheng.Effect of Aging on Fracture Toughness at Cryogenic Temperature in JN1 Austenitic Steel[J].Transactions of Materials and Heat Treatment,1999(3). |
| |
| Authors: | Liu Shicheng |
| |
| Abstract: | Fracture toughness tests were conducted at 4K and 77K for specimens of JN1 austenitic steel aged at 923,973 and 1073K for 5 hours. Comparison with the fracture toughness values of specimens solution treated showed a considerable aging induced embrittlement in this steel. The results of microstructure observation and X ray diffraction showed that the embrittlement is due to the precipitation of M\-\{23\}C\-6 carbide along grain boundry and annealing twin boundary. |
| |
| Keywords: | austenitic steel \ cryogenic fracture toughness \ aging embrittlement \ grain boundary precipitation |
| 本文献已被 CNKI 等数据库收录！ |
