文章摘要信息 关键词 ： 拼焊板;成形极限图;应变状态;成形能力 [gap=801]Keywords : tailor welded blank(TWB);forming limit diagram(FLD);strain state;formability
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结果表明，多道次成形可以提高板材成形能力，抑制起皱等成形缺陷的产生；
The result is that multi-steps forming can improve the forming ability of sheet metal and retrain the wrinkling defect;
从外加工拓展到内加工，使人类的加工成形工艺从二维表面进入三维空间，极大地提高了零件的成形能力。
The development from outer processes to Inner processes brings human's shape-forming technology from 2-d surface into 3-d space, which greatly improves shape-forming capability.
定向凝固工艺可有效提高镁合金铸锭的热轧成形能力，在轧制温度为673k的条件下进行热轧，总变形量可达94%以上而不出现裂纹。
Directional solidification could improve hot rolling formability of magnesium ingot effectively. The total deformation could reach 94% without cracking when hot rolling was held at 673k.
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