研究了直接双相区热处理工艺的保温时间和回火时间对9Ni钢组织性能的影响.结果表明:在相同回火条件下,保温时间为40 min时低温韧性最好,少于Quenching+Lamellarizing+Tempering(QLT)工艺中双相区保温所需时间;保温时间为20 min时,强度增加但低温韧性降低;保温时间过长(60 min)会导致组织粗化、低温韧性差,延长回火时间低温冲击功也基本不变.保温时间为40 min时,随着回火时间的增加.回转奥氏体增加,抗裂纹扩展能力增强,低温冲击功增加,但强度降低,这主要归因于回转奥氏体在板条束间的析出和对马氏体中C及其它有害元素的净化作用.
参考文献
| [1] | Strife J R;Pessoja D E .The effect of heat treatment on microstructure and cryogenic fracture properties in 5Ni and 9Ni steel[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1980,ii(08):1341-1350. |
| [2] | Nobuo Nakada;Junaidi Syarif;Toshihiro Tsuchiyama et al.Improvement of strength-ductility balance by copper addition in 9%Ni steels[J].Materials Science and Engineering A:Structural Materials Properties Microstructure and Processing,2004,374(1-2):137-144. |
| [3] | Fultz B;Kim J J;Kim Y H et al.The stability of precipitated austenite and the toughness of 9Ni steel[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1985,16(12):2237-2249. |
| [4] | 张弗天;王景韫;郭蕴宜 .Ni9钢种的回转奥氏体与低温韧性[J].金属学报,1984,20(06):A405-A410. |
| [5] | Naoki Saitoh;RyoutaYamaha;Hirohide Muraoka et al.Development of heavy9% nickel steel plates with superior low-temperature toughness for LNG storage tanks[J].NIPPON STEEL TECHNICAL REPORT,1993,58:9-16. |
| [6] | 杨跃辉,蔡庆伍,武会宾,王华.两相区热处理工艺对9Ni钢性能的影响[J].材料热处理学报,2009(03):92-95. |
| [7] | 刘振宇;谢章龙;杨哲 等.一种低碳9Ni钢厚板的制造方法[P].中国,ZL 200810010125.7,2008-01-16. |
| [8] | Xie Zhang-long;Liu Zhen-yu;Wang Guo-dong.Development of online heat treatment processing for 9Ni steel plates[A].Shanghai:Shangh8i Scientific and Technological Literature Publishing Hourse,2008:C141-C144. |
| [9] | Zhen Guo .The limit of strength and tenghness of steel[D].University of California,Berkelcy,2001. |
| [10] | Tomita Y;Okabayashi K .Effect of microstructure on strength and toughhess of heat-treated low alloy structural steels[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1986,17(07):1203-1209. |
| [11] | Wang Chun-fang;Wang Mao-qiu;Shi Jie et al.Effect of microstrustural refinement on the toughness of low carbon martensite steel[J].Scripta Materialia,2008,58(06):492-495. |
| [12] | 王春芳,王毛球,时捷,惠卫军,董瀚.17CrNiMo6钢中板条马氏体的形态与晶体学分析[J].材料热处理学报,2007(02):64-68. |
| [13] | Fultz B;Kim J.I;Kim Y.H et al.The chemical composition of precipitated austenite in 9Ni steel[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1986,17(06):967-972. |
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%