镍基单晶高温合金的研发进展
张健(),王莉,王栋,谢光,卢玉章,申健,楼琅洪
Recent Progress in Research and Development of Nickel-Based Single Crystal Superalloys
ZHANG Jian(),WANG Li,WANG Dong,XIE Guang,LU Yuzhang,SHEN Jian,LOU Langhong

图8. 螺旋选晶器的结构与典型组织

Fig.8. Typical configuration (a) and microstructures (b) of a spiral grain selector (hs—length of screw pitch, ds—diameter of spiral, θ—initial angle of spiral, dw—diameter of helicoid)