对不同Ti含量的气电立焊焊缝组织及力学性能进行了对比研究.结果表明,Ti的质量分数在0.028％～0.038％范围内时,焊缝中获得大量细小的针状铁素体,焊缝组织及低温韧性得以明显改善.当Ti过量时,焊缝中的针状铁素体减少,组织以贝氏体为主,低温韧性相应下降.焊缝组织中观察到块状和条状的M-A组元,随着焊缝Ti含量增加,其总量增加.焊缝夹杂物多为以氧化物为核心,外层包裹着MnS的复合夹杂物,并随夹杂物Ti含量的增加,由Mn-Si-Al-O型向TiMn-Al-O型转变,有利于促进针状铁素体形成.而当焊缝中Ti过量时,主要夹杂物又转变为对针状铁素体形核无效的Ti-A1 O型,促进了贝氏体转变.
参考文献
| [1] | Byun J S,Shim J H,Cho Y W,et al .Non-Metallic Inclusion and Intragranular Nucleation of Ferrite in Ti-Killed C-Mn Steel[J].Act Materially,2003,51 |
| [2] | 熊玲琪,李红卫.高强度低合金钢焊缝金属的组织及其影响因素[J].钢铁研究学报,2010(06):53-59. |
| [3] | 隋少华,蔡玮玮,宋天革,张岸.Ti-B微合金化焊缝金属的韧化机制[J].焊接学报,2004(06):103-106. |
| [4] | Farrar R A,Harrison P L .Review:Acicular Ferrite in CarbonManganese Weld Metals:An Overview[J].Journal of Materials Science,1987,22 |
| [5] | Fox A G,Brothers D G .The Role of the Titanium in the NonMetallic Inclusions Which Nucleate Acicular Ferrite in the Submerged Arc Weld (SMAW) Fusion Zones of Navy HY-100Steel[J].Scripta Metallurgica,1995,32(7):1061.,1995. |
| [6] | Hamada M,Okaguchi S,Komizo Y .Effect of Tensile Strength and Boron Addition on Microstructure and Toughness of Weld Metal Containing Ti[J].Welding International,2009,27(10):1.,2009. |
| [7] | Trindade V B,Paranhos R P D R,Payao J D A C,et al .The Effect of Adding Ni on the Strength of C-Mn Steel Welds Before and After Stress Relieving Heat Treatment[J].Welding International,2007,21(3):25.,2007. |
| [8] | Babu S S.The Mechanism of Acicular Ferrite in Weld Deposits[J].Current Opinion in Solid State and Materials Science,2008 (8):267.,2008. |
| [9] | LIU Z Z,Kobayashi Y,YIN F X,et al .Nucleation of Acicular Ferrite on Sulfide Inclusion During Rapid Solidification of Low Carbon Steel[J].ISIJ International,2007,47(12):1781.,2007. |
| [10] | LIU J S,Yanagimoto J .Ferrite Nucleation Kinetics Inside Austenite Grain[J].ISIJ International,2007,47(8):1188.,2007. |
| [11] | Lee J .Evaluation of the Nucleation Potential of Intragranular Acicular Ferrite in Steel Weldments[J].Acta Metallurgica,1994,42(10):3291.,1994. |
| [12] | 余圣甫,雷毅,谢明立,黄安国,李志远.晶内铁素体的形核机理[J].钢铁研究学报,2005(01):47-50. |
| [13] | 李占杰,余圣甫,雷毅,姚芳.氧化物冶金钢CGHAZ中有益夹杂物的作用[J].焊接学报,2007(06):57-60. |
| [14] | Kim S,Kang D,Kinm T,et al .Fatigue Crack Growth Behavior of the Simulated HAZ of 800MPa Grade High-Per formance Steel[J].Materials Science and Engineering,2011,528 |
| [15] | CHAI Feng,YANG Cai-fu,SU Hang,ZHANG Yong-quan,XU Zhou.Effect of Magnesium on Inclusion Formation in Ti-Killed Steels and Microstructurai Evolution in Welding Induced Coarse-Grained Heat Affected Zone[J].钢铁研究学报（英文版）,2009(01):69-74. |
| [16] | SHI Y W,HAN Z X .Effect of Thermal Cycle on Microstructure and Fracture Toughness of Simulated Heat-Affected Zone for 800 MPa Grade High Strength Low Alloy Steel[J].Journal of Materials Processing Technology,2008,207 |
| [17] | 王征,桂赤斌,王禹华.钛对气保护药芯焊丝熔敷金属组织韧性的影响[J].焊接学报,2009(11):109-112. |
| [18] | Sasaki K,Suda K,Motomatsu R,et al .Development of TwoElectrode Electrogas Arc Welding Process[J].Nippon Steel Technical Report,2004,90 |
| [19] | Byun J,Shim J .Inoculated Acicular Ferrite Microstructure and Mechanical Properties[J].Materials Science and Engineering,2001,319 |
| [20] | 葛有琰,杜强.含硫化氢环境油气田开发材质选择标准方法--NACE MR 0175/ISO 15156的应用概要[J].石油与天然气化工,2008(05):410-415. |
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%