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超高强度55SiMn2Mo贝氏体钢组织和性能的研究
The Study of Microstructure and Properties on Superhigh Strength 55SiMn2Mo Bainite Steel
【摘要】 通过对５５ＳｉＭｎ２Ｍｏ贝氏体钢显微组织和力学性能的研究发现：该钢空冷条件下得到Ｂ／Ｍ复合组织，其中Ｍ为板条马氏体和孪晶马氏体的混合组织，Ｂ为变态下贝氏体。５５ＳｉＭｎ２Ｍｏ钢空冷后在２５０～３００℃范围内回火时，可获得超高强度及较好的塑韧性配合，当回火温度超过３００℃后，则有回火脆性产生。
【Abstract】 A study of the microstructure and properties on the 55SiMn2Mo bainite steel found that under air-cooling conditions,55SiMn2Mo steel obtained B/M duplex microstructure,in which M consists of lath martensite and twin martensite,and B appears abnormal low bainite. After air-cooling and tempering within 250-300℃,55SiMn2Mo steel exhibits a best strength-toughness combination. but tempering over 300 ℃ will cause temper brittleness.
- 【文献出处】 材料科学与工艺 ,MATERIAL SCIENCE AND TECHNOLOGY , 编辑部邮箱 ,1995年03期
- 【分类号】TG142.2
- 【被引频次】2
- 【下载频次】111