摘要
采用爆炸+轧制工艺可以制备出较薄且表面质量较高的AZ31B/6061复合板,但AZ31B/6061爆炸焊复合板的轧制较难成功。本试验以平面应变热压缩对复合板的热轧进行物理模拟,通过轧前预热、AZ31B镁合金和6061铝合金的热压缩、复合板的平面应变压缩试验研究,选择出了合适的参数,成功地对复合板进行了轧制。结果表明,400℃5 min条件下压缩后的复合板在各压缩率下整体上包覆和"鼓肚"程度均比较小; AZ31B/6061爆炸焊复合板在400℃热轧温度下可以轧制成功,但不同压下率下轧制的复合板出现了不同程度的翘曲,且翘曲程度随着压下率的增加先减小后增大,30%压下率的复合板翘曲程度最小,平直度较高,无边裂,轧件质量良好。这种探究轧制参数的方法对于其他异种材料复合板也具有一定的参考价值。
The thin AZ31B/6061 composite plates with high surface quality can be prepared by explosive welding and subsequent rolling process,but the rolling of explosive-welded AZ31B/6061 composite plates is difficult to achieve. The physical simulation of hot roll- ing of the composite plates is performed by the planar strain thermocompression. The suitable parameters were successfully selected for the rolling of composite plates through the experimental study of the preheating before rolling,the hot compression of AZ31B magnesium alloy and 6061aluminum alloy and the plane strain compression of composite plates. The results indicate that the composite plates after compression at 400℃ for 5 min have a smaller coating and bulging degree on the whole under various reduction rates. The explosive-welded AZ31B/6061 composite plates can be successfully rolled at 400℃,but the warpage of different degrees appears after rolling at different reduction rates,and the warping degree decrea- ses first and then increases with the increase of reduction rate. The relatively flat composite plates with the least warping degree and no edge cracking are obtained at the 30% reduction rate. This method of exploring rolling parameters also has certain guiding significance for the other dissimilar-material composite plates.
作者
陈志青
唐巍
曹晓卿
杨文武
王东亚
CHEN Zhi-qing;TANG Wei;CAO Xiao-qing;YANG Wen-wu;WANG Dong-ya(College of Materials Science and Engineering,Taiyuan University of Technology,Taiyuan 030024,China;Shanxi Key Laboratory of Advanced Magnesium-based Materials,Taiyuan 030024,China)
出处
《轻合金加工技术》
CAS
北大核心
2018年第12期21-26,共6页
Light Alloy Fabrication Technology
基金
国家自然科学基金(51375328)
山西省归国留学人员科研项目(No.2015-036)
