脉冲电流对冷坩埚定向凝固TiAl基合金微观组织和性能的影响
王国田, 龙泽堃, 吴彪, 王强, 丁宏升

Effects of Pulse Current on the Microstructure and Properties of Directionally Solidified TiAl Based Alloy in Cold Crucible
WANG Guotian, LONG Zekun, WU Biao, WANG Qiang, DING Hongsheng
图4 在不同脉冲电流作用下Ti-45.5Al-4Cr-2.5Nb合金试样的宏观凝固组织
Fig.4 Longitudinal section macrostructures of 45.5Al-4Cr-2.5Nb alloy with different pulse current (a) 0 mA/mm2; (b) 17.6 mA/mm2; (c) 35.3 mA/mm2; (d) 52.9 mA/mm2