采用等径角轧制工艺制备了AM60镁合金板材,并对轧制前后板材的显微组织与力学性能进行了对比.结果表明:经过等径角轧制后,板材晶粒取向由轧制前的(0002)基面取向演化为非基面取向,晶粒细化并有大量细密孪晶出现;板材强度明显提高,抗拉强度由轧制前的222 MPa增大到372 MPa,屈服强度由156 MPa增大到260 MPa,断后伸长率略有增加.
所属栏目
国家自然科学基金资助项目(50674043)
收稿日期
2007/7/112007/11/26
作者单位
仇治勤:湖南大学材料科学与工程学院, 湖南 长沙 410082
陈振华:湖南大学材料科学与工程学院, 湖南 长沙 410082
夏伟军:湖南大学材料科学与工程学院, 湖南 长沙 410082
陈鼎:湖南大学材料科学与工程学院, 湖南 长沙 410082
备注
仇治勤(1981-),男,山东潍坊人,硕士研究生.
引用该论文:
QIU Zhi-qin,CHEN Zhen-hua,XIA Wei-jun,CHEN Ding.Microstructure and Mechanical Properties of AM60 Magnesium Alloy Sheet Processed by Equal Channel Angular Rolling[J].Materials for mechancial engineering,2008,32(5):48～51
仇治勤,陈振华,夏伟军,陈鼎.等径角轧制AM60镁合金板材的显微组织与力学性能[J].机械工程材料,2008,32(5):48～51
参考文献
【1】
Iwanaga K,Tashiro H,Okamoto H,et al.Improvement of formability from room temperature to warm temperature in AZ-31 magnesium alloy[J].Journal of Materials Processing Technology,2004,155/156:1313-1316.
【2】
Kalidindi S R.Modeling anistroptropic strain hardeningand deformation textures in low stacking fault energy material[J].International Journal of Plastisity,2001,17:837-860.
【3】
Poss R.Sheet metal production of magnesium[J].Materials Science Forum,2003,419/422:327-336.
【4】
Perez-Prado M T,Valle J A,Contreras J M,et al.Microstructural evolution during large strain hot rolling of an AM60 Mg alloy[J].Scripta Materialia,2004,50:661-665.
【5】
Valle J A,Prado M T,Ruano O A.Texture evolution during large strain hot rolling of the AM61 Mg alloy[J].Mater Sci Eng A,2003,A355:68-78.
【6】
Mabuchi M,Iwasaki H,Yanase K,et al.Low temperature superplasticity in an AZ91 Magnesium alloy processed by ECAE[J].Scripta Materialia,1997,36(6):681-686.
【7】
Kim W J,Hong S I,Kim Y S,et al.Texture development and its effect on mechanical properties of an AZ61 Mg alloy fabricated by equal channel angular pressing[J].Acta Materialia,2003,51:3293-3307.
【8】
Horita Z,Furukawa M,Nemoto M,et al.Superplastic forming at high strain rates after severe plastic deformation[J].Acta Mater,2000,48(14):3633-3640.
【9】
Yoshida Y,Cisar L,Kamado S,et al.Effect of microstructure factors on tensile properties of an ECAE-processed AZ31 magnesium alloy[J].Mater Trans,2003,44(4):468-475.
【10】
Koike J.New deformation mechanisims in fine grain Mg alloy[J].Materials Sciences Forum,2003,419/422:189-194.
【11】
程永奇,陈振华,夏伟军,等.等径角轧制AZ31镁合金板材的组织与性能[J].中国有色金属学报,2005,15(9):1369-1375.
【12】
程永奇.AZ31镁合金板材等径角轧制及冲压性能研究[D].长沙:湖南大学,2007.
【13】
Friedrich H,Schumann S.Research for a “new age of magnesium” in the automotive industry[J].Journal of Materials Processing Technology,2001,117:276-281.
