在高温钼丝炉内向16Mn钢中加入不同含量镧进行脱氧.利用SEM、EDS和OM测试并研究La含量对钢中夹杂物的成分、大小分布及试验钢组织的影响,并探讨了钢中含镧夹杂物诱发晶内针状铁素体形核机制.结果表明,随钢中镧含量增加,夹杂物依次转变为LaAlO3、La2O2S和La2S3.试样经镧处理后,钢液在1600℃时保温180 s,夹杂物最为细小且弥散.钢中晶内铁素体含量随镧含量增加先增大后减小,最佳镧含量约为0.014％(质量分数).钢中含镧夹杂物周围形成贫Mn区,促进晶内针状铁素体形核.
参考文献
| [1] | Gloor K.Non-metallic inclusions in weld metal[J].ⅡW DOC Ⅱ-A-106-63,1963.,1963. |
| [2] | Babu S S,David S A .Inclusion formation and microstructure evolution in low alloy steel welds[J].ISIJ International,2002,42(12):1344-1353.,2002. |
| [3] | Sha Q Y,Sun Z Q .Grain growth behavior of coarse-grained austenite in a Nb-V-Ti microalloyed steel[J].Materials Science and Engineering A,2009,523:77-84.,2009. |
| [4] | Furuhara T,Shinyoshi T,Miyamoto G,et al .Muhiphase crystallography in the nucleation of intragranular ferrite on MnS + V (C,N) complex precipitate in austenite[J].ISIJ International,2003,43(12):2028-2037.,2003. |
| [5] | 刘中柱,桑原守.氧化物冶金技术的最新进展及其实践[J].炼钢,2007(04):1-6. |
| [6] | Sama D S,Karasev A V,Jonsson P G,On the role of non-metallic inclusions in the nucleation of acicular ferrite in steels[J].ISIJ International,2009,49(7):1063-1074.,2009. |
| [7] | Kojma A,Hoshino M .Super high HAZ toughness technology with fine microstructure imparted by fine particles[J].Nippon Steel Technical Report,2004,380 |
| [8] | 卜勇,尹法章,胡本芙,陈晓.稀土和Ca、Mg元素对高强度钢焊接热影响区组织和韧性的影响[J].钢铁,2006(04):71-76. |
| [9] | 文彬,宋波,潘宁,等 .Ce对16Mn钢中夹杂物和组织的影响[J].中国稀土学报.2010,2010,28(6):733-738.WEN Bin,SONG Bo,PAN Ning,et al.Effect of Ce on inclusions and microstructures of 16Mn steel[J].Journal of the Chinese Rare Earth Society.2010,28(6):733-738.,2010. |
| [10] | WEN Bin,SONG Bo,PAN Ning,et al .Effect of austenitizing temperature on the microstructures in 16Mn steels treated by cerium[J].International Journal of Minerals,2011,18(6):652-658.,2011. |
| [11] | Lee T K,Kim H J,Kang B Y,et al .Effect of inclusion size on the nucleation of acicular ferrite in welds[J].The Iron and Steel Institute of Japan,2000,40(12):1260-1268.,2000. |
| [12] | Yamamoto K,Kasegawa T,Takamura J .Effect of boron on intragranular ferrite formation in Ti-Oxide bearing steels[J].ISIJ International,1996,36(1):80-86.,1996. |
| [13] | Gregg J M,Bhadeshia H K D H .Solid state nucleation of acicular ferrite on minerals added to molten steel[J].Acta Materialia,1997,45(2):739-748.,1997. |
| [14] | Stephen A C.Weld metal microstructure in carbon manganese deposits[C]//the international conference on quality and reliability in welding.Hangzhou:The Chinese Mechanical Engineering Society,1984.,1984. |
| [15] | Madariage I,Gutierrez I .Role of the particle matrix interface on the nucleation of acicular ferrite in a medium carbon microalloyed steel[J].Acta Materialia,1999,47(3):951-960.,1999. |
| [16] | Ricks R A,Howell P R,Barritte G S .The nature of acicular ferrite in HSLA steel weld metals[J].Journal of Material Science,1982,17(3):732-740.,1982. |
| [17] | 余圣甫,雷毅,黄安国,谢明立,李志远.氧化物冶金技术及其应用[J].材料导报,2004(08):50-52. |
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%