用激光快速成形法制备了致密、无裂纹的316L 不锈钢(SS)/镍基合金/Ti6Al4V梯度薄壁件. EDS与XRD分析显示, 在316L SS/镍基合金梯度过渡区内为单相$\gamma$奥氏体, 硬度沿316LSS到镍基合金方向逐步增加; 在镍基合金/Ti6Al4V梯度过渡区内,组织变化顺序为: γ→γ+β+TiNi3+Ti2Ni→TiNi3+Ti2Ni+→βTi2Ni+β→α+β+Ti2}Ni→α+β; 过渡区内, Ti6Al4V含量 为20%(质量分数)时, 硬度达到最大值HV10 830, 随后,随Ti6Al4V含量增加, 硬度逐 渐减小.
The graded material of 316L stainless steel/Ni-based alloy/Ti6Al4V was fabricated from metal powders using laser rapid forming process. The as-formed graded material is fully dense and free of cracks. The microstructure of the graded segment of 316L stainless steel to Ni-based alloy consists of γphase and the hardness values increase with the increment of the content of Ni-based alloy. A series of phase evolutions, , along the graded segment of Ni-based alloy to Ti6Al4V have occurred. The maximum hardness value (HV10830) was measured at the weight ratio of 80% Ni-based alloy to 20% Ti6Al4V, then the hardness values decrease with the increment of the content of Ti6Al4V.
参考文献
| [1] | |
| [2] | |
| [3] | |
| [4] | |
| [5] | |
| [6] | |
| [7] |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%