三联冶炼GH4169合金研究进展
杜金辉, 毕中南, 曲敬龙

Recent Development of Triple Melt GH4169 Alloy
DU Jinhui, BI Zhongnan, QU Jinglong
图9 数值模拟的锻造方式对GH4169合金盘锻件晶粒尺寸的影响
Fig.9 Effects of forging method on the grain size of GH4169 disc by numerical simulation
(a) upsetting (b) die forging
(c) preforging (d) finish-forging