采用大变形异步叠轧法制备了超细晶铜材,研究了再结晶过程中铜材的组织演变过程、织构变化过程以及晶界特征分布情况.结果表明:经过220℃×35min和220℃×60min退火处理,分别获得0.1-0.2μm和0.5～1.0μm范围的超细晶铜材,主要晶界类型均属于低能晶界;六道次叠轧后的无氧纯铜板材在退火初始阶段仍为轧制织构,但由于剪切力的作用织构强点位置发生偏移、强度有所降低;随着退火时间的延长,织构组分发生变化,C取向发生孪晶转变,流向B/G取向.
参考文献
| [1] | Tsuji N;Saito Y;Lee S H et al.ARB and other new techniques to produce bulk ultrafine grained materials[J].Advanced Engineering Materials,2003,5(05):338-344. |
| [2] | 魏伟,陈光.大塑性变形制备块体纳米材料[J].机械工程学报,2002(07):1-5. |
| [3] | Hirsch;Lücke;Hathedy .Mechanism of deformation and development of rolling textures in polycrystalline f.c.c.Metals-Ⅲ.The influence of slip inhomogeneities and twinning[J].Acta Metallurgica,1988,36(11):2905-2927. |
| [4] | Humphreys;Ferry .Application of electron backscattered diffraction to studies of annealing of deformed metals[J].Journal of Materials Science and Technology,1997,13(01):85-90. |
| [5] | TADAO WATANABE;SADAHIRO TSUREKAWA .THE CONTROL OF BRITTLENESS AND DEVELOPMENT OF DESIRABLE MECHANICAL PROPERTIES IN POLYCRYSTALLINE SYSTEMS BY GRAIN BOUNDARY ENGINEERING[J].Acta materialia,1999(15/16):4171-4185. |
| [6] | 余永宁;毛卫民.材料的结构[M].北京:冶金工业出版社,2001:325. |
| [7] | 毛卫民;赵新兵.金属的再结晶与晶粒长大[M].北京:冶金工业出版社,1994:137. |
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%