吹砂对DD6单晶高温合金表面完整性和高周疲劳强度的影响
Effects of Sand Blasting on Surface Integrity and High Cycle Fatigue Properties of DD6 Single Crystal Superalloy
吹砂对DD6单晶高温合金表面完整性和高周疲劳强度的影响 |
| 李嘉荣, 董建民, 韩梅, 刘世忠 |
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Effects of Sand Blasting on Surface Integrity and High Cycle Fatigue Properties of DD6 Single Crystal Superalloy |
| LI Jiarong, DONG Jianmin, HAN Mei, LIU Shizhong |
| 图6 未吹砂和粒径150 μm吹砂DD6高温合金试样在760和980℃旋转弯曲高周疲劳断口和疲劳源区形貌 |
| Fig.6 High cycle fatigue fracture (a-d) and source zone (e-h) morphologies of DD6 superalloy specimens before (a, e, c, g) and after (b, f, d, h) sand blasting with 150 μm granularity under rotational bending at 760oC (a, e, b, f) and 980oC (c, g, d, h) (a, e) S = 460 MPa, Nf = 1.10 × 106 cyc (b, f) S = 500 MPa, Nf = 1.97 × 105 cyc (c, g) S = 440 MPa, Nf = 7.46 × 106 cyc (d, h) S = 500 MPa, Nf = 1.44 × 105 cyc |
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