研究了热轧板及不同挤压比的热挤压棒的组织和织构特征,确定了热挤压时＜1100＞织构随应变的加大取代＜1120＞织构的原因.分析了退火对热成形组织及织构的影响,确定了＜1100＞织构的消失与残余形变晶粒再结晶的联系.估算了退火时两类样品的平均晶粒长大速度并讨论了其与织构的关系.综合分析表明,AZ31镁合金热成形后总产生较强的织构,织构提高了热成形后的力学性能.高温退火虽使织构减弱,但伴随晶粒的明显长大.
参考文献
| [1] | Hilpert M;Styczynski A;Kiese J.Influence of thermomechanical processing on microstructure,texture and fatigue performance of the high-strength magnesium alloy AZ80.Proc of magnesium alloys and their applications[A].Eds Mordike B L,Kainer K U,Woffsburg,Germany,1998:319-324. |
| [2] | Toshiji Mukai;Masashi Yamanoi;Hiroyuki Watanabe .Ductility enhancement in AZ31 magnesium alloy by controlling its grain structure[J].Scripta materialia,2001(1):89-94. |
| [3] | Ball E A;Prangnell P B .Teasile-eompressive yield asymmetries in high strength wrought magnesium alloys[J].Scripta Metallurgica et Materialia,1994,31:111-116. |
| [4] | Chino Y;Mabuchi M.Influences of grain size on mechanical properties of extruded AZ91 alloy after different extrusion processes[J].Advances in ENGINEERING MATERIALS,2001(03):981-983. |
| [5] | Philippe M J .Texture formation in hexagonal materials[J].Materials Science Forum,1994,157-162:1337-1350. |
| [6] | Perez Prado M T;Ruano O A .Texture evolution during annealing of magnesium AZ31 alloy[J].Scripta Materialia,2002,46:149-155. |
| [7] | 杨平,孙祖庆,毛卫民.取向成像：一种有效研究晶体材料组织、结构及取向的技术[J].中国体视学与图像分析,2001(01):50-54,32. |
| [8] | Kelley E W;Hosford W F Jr .Plane-strain compression of magnesium and maguesium alloy crystals[J].Transactions AIME,1968,242:5-13. |
| [9] | Chabbi L;Lehnert W;Kawalla R.Hot and cold forming behavior of magnesium alloys AZ31 and AZ61[A].Munich, Germany: DGM inter congress,2000:621-627. |
| [10] | Wonsiewicz B C;Backofen W A .Plasticity of magnesium crystals[J].Transactions AIME,1967,239:1422-1431. |
| [11] | Kelley E W;Hodord W F Jr .The deformation characteristics of textured magnesium[J].Transactions AIME,1968,242:654-660. |
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%