The effect of rare earth (RE) on continuous heating transformation of a high speed steel for rolls was investigated by using differential scanning calorimetry (DSC) with combination of microstructure analysis.Determination of the Ac1 and Ac3,the starting temperature of carbide dissolution and melting upon heating,the enthalpy change for the α→γ transformation and overall carbide dissolution were also established.It was found that RE could reduce the volume fraction of large eutectic carbides and the chrysanthemum-like eutectic colonies but could not change the phase composition.RE made a little change to Ac1,but the variation in Ac3 and enthalpy for the α→γ followed an increasing pattem as the RE addition increased.The start temperatures of carbides dissolution increased with increase of RE addition,which may be associated with the influences of RE on the morphology of carbides,but the overall enthalpy change of carbides dissolution decreases as the RE addition increased.Moreover,the start temperature of melting also increased with increasing RE addition.
参考文献
| [1] | Hwang K C;Lee S;Lee H C .Effects of elements on microstructure and fracture properties of cast high speed steel rolls Part Ⅰ:Microstructural analysis[J].Materials Science and Engineering,1998,254A(1-2):282. |
| [2] | M. Boccalini;H. Goldenstein .Solidification of high speed steels[J].International Materials Reviews,2001(2):92-115. |
| [3] | Wang M J;Mu S M;Sun F F;Wang Y .Influence of rare earth elements on microstructure and mechanical properties of cast high-speed steel rolls[J].Journal of Rare Earths,2007,25:490. |
| [4] | WANG Mingjia,LI Yanmei,WANG Zixi,BAO Er.Effect of rare earth elements on the thermal cracking resistance of high speed steel rolls[J].稀土学报（英文版）,2011(05):489-493. |
| [5] | Fu H G;Xiao Q;Li Y X .A study of the microstructures and properties of Fe-V-W-Mo alloy modified by rare earth[J].Materials Science and Engineering,2005,395A:281. |
| [6] | Raju S;Jeya Ganesh B;Banerjee Aritra;Mohandas E .Characterisation of thermal stability and phase transformation energetics in tempered 9Cr-lMo steel using drop and differential scanning calorimetry[J].Materials Science and Engineering,2007,397A:29. |
| [7] | Ren L;Zhu J M;Nan L;Yang K .Differential scanning calorimetry analysis on Cu precipitation in a high Cu austenitic stainless steel[J].Materials & Design,2011,32:3980. |
| [8] | Ghosha S K;Haldar A;Chattopadhyay P P .On the Cu precipitation behavior in thermomechanically processed low carbon microalloyed steels[J].Materials Science and Engineering,2009,519A:88. |
| [9] | B. Jeya Ganesh;S. Raju;Arun Kumar Rai .Differential scanning calorimetry study of diffusional and martensitic phase transformations in some 9 wt-%Cr low carbon ferritic steels[J].Materials Science and Technology: MST: A publication of the Institute of Metals,2011(2):500-512. |
| [10] | Hsu T Y .Effects of rare earth element on isothermal and martensitic transformations in low carbon steels[J].ISIJ International,1998,38:1153. |
| [11] | Chen L;Ma X C;Wang L M;Ye X N .Effect of rare earth element yttrium addition on microstruetures and properties of a 21Cr-11Ni austenitic heat-resistant stainless steel[J].Materials & Design,2011,32(04):2206. |
| [12] | Wang L M;Lin Q;Yue L J;Liu L Guo F Wang F M .Study of application of rare earth elements in advanced low alloy steels[J].Journal of Alloys and Compounds,2008,451:534. |
| [13] | Raju, S.;Jeya Ganesh, B.;Rai, A.K.;Mythili, R.;Saroja, S.;Raj, B. .A study on martensitic phase transformation in 9Cr-1W-0.23V-0.063Ta-0.56Mn- 0.09C-0.02N (wt.%) reduced activation steel using differential scanning calorimetry[J].Journal of Nuclear Materials: Materials Aspects of Fission and Fusion,2010(1):59-69. |
| [14] | 王贵,周新初,李殿凯,赵金茹.稀土对35CrMo钢淬火组织结构的影响[J].兵器材料科学与工程,2001(01):19-22. |
| [15] | Fu H G;Xing J D;Zhang W;Zhang A P.Manufacturing Technology of High Speed Steel Roll[M].北京:冶金工业出版社,2007:93. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%