采用Gleeble 1500热模拟试验机研究了变形温度、冷却速度对塑料模具718钢显微组织和硬度的影响.试验结果表明,718塑料模具钢在奥氏体区变形后,从600 ℃开始以不高于0.02 ℃/s的速度缓慢冷却,可获得贝氏体组织,硬度(HRC)为40～44;在奥氏体未再结晶区变形产生的位错缠结抑制了贝氏体铁素体的长大,并使718钢的硬度提高.
参考文献
| [1] | Biss V;Cryderman R L.Martensite and Retained Austenite in Hot-rolled Lower-carbon Bainitic Steels[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1971(02):2267. |
| [2] | Masaaki Katsumata;Osamu Ishiyama;Tsuyoshi Inoue et al.Microstructure and Mechanical Properties of Bainite Containing Martensite and Retained Austenite in Low Carbon HSLA Steels[J].MATERIALS TRANSACTIONS,1991,32:715-728. |
| [3] | Yang J R;Huang C Y;Hsieh W H et al.Mechanical Stabilization of Austenite Against Bainitic Reaction in Fe-Mn-Si-C Bainitic Steel[J].Materials Transactions,1996,37:579. |
| [4] | Shipway P H;Bhadeshia H K D H.Mechanical Stabilization of Bainite[J].Materials Science and Technology,1995(11):1116. |
| [5] | Singh Bhadeshia H K D H.Quantitative Evidence for Mechanical Stabilization of Bainite[J].Materials Science and Technology,1996(12):610. |
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%