分别在600、650和700℃度对Ti-Mo低碳钢进行等温处理,对其力学性能进行检测并利用扫描电镜观察其显微组织,最后通过透射电镜和选区电子衍射对纳米尺寸碳化物的相间析出特征进行研究分析.结果表明:相间析出的排间距随着处理温度的降低而减小;排间距的平均值是常量,但单个排间距的值变化很大,两个特定行之间的排间距变化不大;不同方向析出的相间析出粒子之间存在着竞争关系,当两方相遇时,其中某一方向或被迫中断,或发生偏转直至两者的方向几乎相同,这是形成不同的相间析出台阶高度的一个原因;相间析出粒子的析出面并非只固定在{110}α面上,相间析出也可以在铁素体的其他晶面上发生.
参考文献
| [1] | Davenport A T,Berry F G,Honeycombe R W K .Interphase precipitation in iron alloys[J].Metal Science,1968,2(1):104-106.,1968. |
| [2] | Honeycombe R W K,Mehl R F .Transformation from austenite in alloy steels[J].Metallurgical Transactions A,1976(7):915-936.,1976. |
| [3] | Sakuma T,Honeycombe R W K .Effect of manganese on microstructure of an isothermally transformed Fe-Nb-C alloy[J].Materials Science and Technology,1985,1(5):351-356.,1985. |
| [4] | Purdy G R .The dynamics of transformation interfaces in steels-Ⅰ.The ferrite-austenite interface in Fe-C-Mo alloys[J].Acta Metallurgica,1978,26(3):477-486.,1978. |
| [5] | Obara T,Shiflet G J,Aaronson H I .Influence of interfacial structure upon carbide precipitation at austenite:Ferrite boundaries in an Fe-C-Mo alloy[J].Metallurgical Transactions A,1983,14(6):1159-1167.,1983. |
| [6] | Campbell K,Honeycombe R .The isothermal decomposition of austenite in simple chromium steels[J].Metal Science,1974,8(1):197-203.,1974. |
| [7] | Yoshimasa F,Tsuyoshi S,Kunikazu T,et al .Development of high strength hot-rolled sheet steelconsisting of ferrite and nanometer-sized carbides[J].ISIJ international,2004,44(11):1945-1951.,2004. |
| [8] | Shimizu T,Yoshimasa F,Kaneko S.High strength steel sheets for automobile suspension and chassis use-high strength hot-rolled steel sheets with excellent press formability and durability for critical safety parts[J].JFE Technical Report,2004 (4):25-31.,2004. |
| [9] | Mukherjee S,Timokhina I B,Zhu C,et al .Three-dimensional atom probe microscopy study of interphase precipitation and nanoclusters in thermomechanically treated titanium-molybdenum steels[J].Acta Materialia,2013,61(7):2521-2530.,2013. |
| [10] | Okamoto R,Borgenstam A,Agren J .Interphase precipitation in niobium-microalloyed steels[J].Acta Materialia,2010,58(14):4783-4790.,2010. |
| [11] | Batte A D,Honeycombe R W K .Strengthening of ferrite by vanadium carbide precipitation[J].Metal Science,1973,7(1):160-168.,1973. |
| [12] | Yen H W,Ghen P Y,Huang C Y,et al .Interphase precipitation of nanometer-sized carbides in a titanium-molybdenum-bearing low-carbon steel[J].Acta Materialia,2011,59(16):6264-6274.,2011. |
| [13] | 王长军,雍岐龙,孙新军,毛新平,李昭东,雍兮.Ti和Mn含量对CSP工艺Ti微合金钢析出特征与强化机理的影响[J].金属学报,2011(12):1541-1549. |
| [14] | Edmonds D V .Occurrence of fibrous VC during transformation of an Fe-V-C steel[J].J Iron Steel Inst,1972,210(5):363-365.,1972. |
| [15] | Todd J A,Li P,and Copley S M .A new model for precipitation at moving interphase boundaries[J].Metallurgical Transactions A,1988,19(9):2133-2138.,1988. |
| [16] | Lagneborg R,Zajac S .A model for interphase precipitation in V-microalloyed structural steels[J].Metallurgical and Materials Transactions A,2001,32(1):39-50.,2001. |
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