采用Gleeble-1500D热模拟实验机研究ZnAl10Cu2合金在变形温度180～330℃、应变速率0.01～30s-1、真应变0.3～1.2时的热变形组织演化行为.结果表明:在不同变形条件下,共晶中的片状α2相发生了不同程度的球化和弯折,其球化程度随着应变速率的降低、变形温度的升高、真应变的增大而增加;同时,基体β相发生了动态再结晶.当变形温度小于270℃时,随着变形温度的升高,再结晶晶粒更为细小均匀.变形温度进一步升高,晶粒出现局部长大;当应变速率小于1s-1时,动态再结晶晶粒随应变速率的增大而减小;应变速率约为1s-1时,晶粒细小均匀;应变速率继续增加时,动态再结晶晶粒出现不均匀现象.
参考文献
| [1] | 胡海明 .ZA27的研究进展[J].材料导报,1998,12(03):17-20. |
| [2] | GERVAIS E;LEVERT H.The development of a family of zinebase foundry alloys[J].AFS Transactions,1980(03):47-52. |
| [3] | AYIK O.Solidification and foundry studies of Zn/Al alloys[J].Journal of Crystal Growth,1986(79):594-602. |
| [4] | 孙连超;田荣璋.锌及锌合金物理冶金学[M].长沙:中南工业大学出版社,1994 |
| [5] | 石志强,叶以富,李世春,郗学奎,韩彬.Zn-5Al共晶合金的表面效应对超塑变形的影响[J].机械工程材料,2003(01):18-21. |
| [6] | Majid Al-Maharbi;Ibrahim Karaman;Gencaga Purcek .Flow response of a severe plastically deformed two-phase zinc–aluminum alloy[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2010(3):518-525. |
| [7] | Tae Kwon Ha;Jung Rak Son;Won Beom Lee;Chan Gyung Park;Young Won Chang .Superplastic deformation of a fine-grained Zn-0.3wt.%Al alloy at room temperature[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2001(1/2):98-106. |
| [8] | Malek, P .The deformation structure of the superplastic Zn-Al alloy[J].Materials Science & Engineering. A, Structural Materials: Properties, Microstructure and Processing,1999(1-2):132-140. |
| [9] | 肖弦,ZHOU Chunhua.锌合金热变形行为的研究[J].热加工工艺,2008(15):14-16. |
| [10] | 林高用,郑小燕,周佳,张振峰,肖弦.一种锌基合金热变形行为的试验模拟[J].机械工程材料,2007(07):60-62,65. |
| [11] | GOTTSTEIN G;MARX V;SEBAALD R .Integral recrystallization modeling[J].Journal of Shanghai Jiaotong University,2000,5(01):49-57. |
| [12] | 沈昌武,杨合,孙志超,崔军辉.基于BP神经网络的TA15钛合金本构关系建立[J].塑性工程学报,2007(04):101-104,132. |
| [13] | WANG Z;ISHIKAWA T;YUKAWA N et al.Computer simulation and control of miorostructure and mechanical properties in hot forging[J].Annals of the CIRP,1999,48(01):187-190. |
| [14] | 陈石卿;焦明山.钛合金的模锻与挤压[M].北京:国防工业出版社,1982 |
| [15] | 虞觉奇;易文质;陈邦迪.二元合金状态图集[M].上海:上海科学技术出版社,1983 |
| [16] | R.M.Miller;T.R.Bieler;S.L.Semiatin .FLOW SOFTENING DURING HOT WORKING OF Ti-6Al-4V WITH A LAMELLAR COLONY MICROSTRUCTURE[J].Scripta materialia,1999(12):1387-1393. |
| [17] | 王火生;傅高升;王沁峰 等.热变形条件对易拉罐用铝材微观组织的影响[J].机电技术,2003,81(增刊1):284-288. |
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%