通过试验研究了含碳量为0.35％(质量分数,下同)的非调质钢加入不同含量的Al、Ti脱氧后,钢中含MnS夹杂物的形貌、成分、尺寸分布情况以及钢的铸态组织.用激光共聚焦高温扫描显微镜在线观察了不同碳含量的钛脱氧非调质钢试样在1 350℃保温10min后,以2℃/s速率冷却的过程中奥氏体晶内针状铁素体的生成过程.结果表明:钢中铝含量大于0.04％时,不利于形成细小、弥散、球状的MnS,也不利于针状铁素体的生成;钢中铝含量小于0.011％时,向钢中加入0.02％的钛,可以生成细小、弥散的球状MgO-Al2O3-TiOx-SiO2-MnS复合夹杂物,这种复合夹杂物有利于非调质钢中晶内针状铁素体的形成.碳含量影响钛脱氧非调质钢中针状铁素体的形成,钛脱氧钢增碳后针状铁素体比例减少.
参考文献
| [1] | 陈思联,林军,戴观文.晶内铁素体型高强韧性微合金非调质钢的进展[J].特殊钢,2005(03):35-38. |
| [2] | 李洪生,高辉.钢中硫化锰的形态及对钢性能的影响[J].一重技术,2004(04):26-28. |
| [3] | 常开地,赵焕春,张慧峰,张玮,张永军,王国连,李飞.含硫非调质钢轧后硫化物夹杂形貌的观察[J].金属热处理,2006(09):60-64. |
| [4] | 简龙,陈伟庆,孟金霞,惠荣,李国忠.含硫非调质钢中硫化物形态的控制[J].钢铁,2006(10):74-77. |
| [5] | 袁婷,李国忠,周兴海,涂益友,蒋建清.Ca-Si处理对易切削非调质钢30MnVS中硫化物形态和成分的影响[J].特殊钢,2009(05):39-41. |
| [6] | ZHOU Hong;WU Xiu-zhi;CUI Kun .The Effect of Sulphur and Deoxidization Grades by Aluminium on Modification of In clusion and Machinability of Ca-Treated Steels[J].Materials For Mechanical Engineering,1995,6(03):22. |
| [7] | D. S. SARMA;A. V. KARASEV;P. G. JONSSON .On the Role of Non-metallic Inclusions in the Nucleation of Acicular Ferrite in Steels[J].ISIJ International,2009(7):1063-1074. |
| [8] | 尚德礼,吕春风,于广文.钢中铝对钛氧化物及针状铁素体形成的影响[J].炼钢,2009(05):25-27,47. |
| [9] | Grong O;Matlock D K .Microstructural Development in Mild and Low Alloy Steel Weld Metals[J].International Metals Reviews,1986,31:27. |
| [10] | ShimJ H;OhYJ;ShimJ Y et al.Ferite Nucleation Poten cy of Non Metallic Inclusions in Medium Carbon Steel[J].Acta Materialia,2001,49(12):2115. |
| [11] | Barbaro F J;Krauklis P;Easterling K E.Formation of Acicu lar Ferrite at Oxide Particles in Steels[J].Materials Science and Technology,1989(05):1057. |
| [12] | Gregg J M;Bhadeshia H K D H .Solid State Nucleation of Acicular Ferrite on Minerals Added to Molten Steel[J].Acta Mate rialia,1997,45:739. |
| [13] | Byun J S;Shim J H;Cho Y W et al.Non-Metallic Inclusion and Intrgranular Nucleation of Ferrite in Ti Killed C Mn Steel[J].Acta Materialia,2003,51:1593. |
| [14] | 杨占兵,王福明,宋波,王森.含Ti复合夹杂物对中碳非调质钢组织和力学性能的影响[J].北京科技大学学报,2007(11):1096-1100. |
| [15] | Mills A R;Thewlis G;Whiteman J A.Nature of Inclusions in Steel Weld Metals and Their Influence on Formation of Acicular Ferrite[J].Materials Science and Technology,1987(03):1051. |
| [16] | Zhongzhu LIU;Yoshinao KOBAYASHI;Fuxing YIN .Nucleation of Acicular Ferrite on Sulfide Inclusion during Rapid Solidification of Low Carbon Steel[J].ISIJ International,2007(12):1781-1788. |
| [17] | 杨成威,吕迺冰,卓晓军,王新华,王万军.MnS在Ti-Al复合脱氧氧化物上的析出研究[J].钢铁,2010(11):32-36. |
| [18] | Masamitsu WAKOH;Takashi SAWAI;Shozo MIZOGUCHI .Effect of S Content on the MnS Precipitation in Steel with Oxide Nuclei[J].ISIJ International,1996(8):1014-1021. |
| [19] | Ying Yang,Chaobin Lai,Fuming Wang,Zhanbing Yang,Bo Song.Effect of inclusions on the formation of acicular ferrite in Ti-bearing non quenched-and-tempered steel[J].北京科技大学学报（英文版）,2007(06):501-506. |
| [20] | 低碳高硫磷钢硫化物凝固析出的热力学分析[J].宝钢技术,2005(05):60-65,68. |
| [21] | Wan-Yi KIM;Jong-Oh JO;Chang-Oh LEE .Thermodynamic Relation between Aluminum and Titanium in Liquid Iron[J].ISIJ International,2008(1):17-22. |
| [22] | Jong-Jin PAK;Jong-Oh JO;Sun-In KIM .Thermodynamics of Titanium and Oxygen Dissolved in Liquid Iron Equilibrated with Titanium Oxides[J].ISIJ International,2007(1):16-24. |
| [23] | Hino Mitsutaka;Ito Kimihisa.Thermodynamic Data for Steelmaking[M].Sendai:Tohoku University Press,2010 |
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%