采用Gleeble-1500型热模拟试验机研究了一种定影辊用铝-锰-镁合金在高温变形时的动态再结晶行为,利用光学显微镜和透射电子显微镜观察了合金在不同压缩条件下的组织形貌特征.结果表明:变形后合金动态回复的平均亚晶尺寸随Z参数的降低而增大,其倒数与Z参数的自然对数和流变应力的双曲正弦项的自然对数均满足线性关系;随着Z值的降低,合金中的主要软化机制逐步由动态回复转变为动态再结晶;合金在Z值不大于1.93×1013s-1的条件下变形时才可能发生部分动态再结晶.
参考文献
[1] | Hui Zhang;Luoxing Li;Deng Yuan .Hot deformation behavior of the new Al-Mg-Si-Cu aluminum alloy during compression at elevated temperatures[J].Materials Characterization,2007(2):168-173. |
[2] | Byoung Ho Lee;N. S. Reddy;Jong Taek Yeom;Chong Soo Lee .Flow softening behavior during high temperature deformation of AZ31 Mg alloy[J].Journal of Materials Processing Technology,2007(0):766-769. |
[3] | D.R. Fang;Q.Q. Duan;N.Q. Zhao;J.J. Li;S.D. Wu;Z.F. Zhang .Tensile properties and fracture mechanism of Al–Mg alloy subjected to equal channel angular pressing[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2007(1-2):137-144. |
[4] | 胡卓超,张德芬,黄涛,左良,王福.3104铝合金的流变应力行为与动态再结晶[J].机械工程材料,2005(02):6-9,20. |
[5] | 李俊鹏,沈健,闫晓东,毛柏平,闫亮明.温度对7075铝合金热变形显微组织演化的影响[J].中国有色金属学报,2008(11):1951-1957. |
[6] | H. E. Hu;L. Zhen;J. Z. Chen .Microstructure evolution in hot deformation of 7050 aluminium alloy with coarse elongated grains[J].Materials Science and Technology,2008(3):281-286. |
[7] | G.Y. Lin,Z.F. Zhang,H. Zhang,D.S. Peng,J. Zhou.STUDY ON THE HOT DEFORMATION BEHAVIORS OF Al-Zn-Mg-Cu-Cr ALUMINUM ALLOY[J].金属学报(英文版),2008(02):109-115. |
[8] | 方军,王克鲁,董显娟,李鑫,杨化娟.应变速率和温度对炉冷态TA15钛合金在α+β两相区压缩变形行为的影响[J].机械工程材料,2009(02):9-11,15. |
[9] | 李慧中,梁霄鹏,张新明,黄伯云,张传福.2519铝合金热变形组织演化[J].中国有色金属学报,2008(02):226-230. |
[10] | 陈鸿玲,傅高升,王火生,陈永禄,王沁峰.高成形性罐用铝材热变形过程的微观组织观察[J].福建工程学院学报,2005(01):61-65. |
[11] | 沈健,唐京辉,谢水生.Al-Zn-Mg合金的热变形组织演化[J].金属学报,2000(10):1033-1036. |
[12] | 沈健.变形条件对2091铝锂合金高温变形组织的影响[J].矿冶工程,1996(04):57. |
[13] | H.J.M.Queen .Application of Hot Workability Studies to Extrusion Processing. PartIII: Physical and Mechanical Metallurgy of Al-Mg-SI and Al-Zn-Mg Alloys[J].Canadian Metallurgical Quarterly,1997(2):73-86. |
[14] | McQueen HJ.;Ryan ND. .Constitutive analysis in hot working[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2002(1-2 Special Issue SI):43-63. |
[15] | S. Spigarelli;E. Evangelista;H.J. McQueen .Study of hot workability of a heat treated AA6082 aluminum alloy[J].Scripta materialia,2003(2):179-183. |
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%