中国激光, 2019, 46 (11): 1102007, 网络出版: 2019-11-09
镍基单晶高温合金选区激光熔化成形工艺及组织 
下载： 1148次
Process Parameters and Microstructure of Ni-Based Single Crystal Superalloy Processed by Selective Laser Melting
图 & 表
图 2. 不同扫描间距下致密度和激光体能量密度随加工工艺参数的变化。(a) S =120 μm;(b) S =100 μm;(c) S =80 μm;(d) S =60 μm
Fig. 2. Variations in relative density and volume energy density with process parameters under different hatch spacings (S ). (a) S =120 μm; (b) S =100 μm; (c) S =80 μm; (d) S =60 μm
图 3. 不同激光体能量密度下制备的SLM成形试样的X-Y 面形貌。(a) S =120 mm,L =50 mm,V =50 m·min-1,E V=32 J·mm-3; (b) S =80 mm,L =30 mm,V =40 m·min-1,E V=100 J·mm-3;(c) S =100 mm,L =20 mm,V =20 m·min-1,E V= 240 J·mm-3;(d) Fig. 3. Images of X-Y planes in SLM-processed samples at different volume energy densities. (a) S =120 mm, L =50 mm, V =50 m·min-1, E V=32 J·mm-3; (b) S =80 mm, L =30 mm, V =40 m·min-1, E V=100 J·mm-3; (c) S =100 mm, L =20 mm, V =20 m·min-1
Fig. 3. Images of X-Y planes in SLM-processed samples at different volume energy densities. (a) S =120 mm, L =50 mm, V =50 m·min-1, E V=32 J·mm-3; (b) S =80 mm, L =30 mm, V =40 m·min-1, E V=100 J·mm-3; (c) S =100 mm, L =20 mm, V =20 m·min-1
图 4. SRR99合金SLM成形试样X-Z 面裂纹现象。(a)低倍形貌;(b)高倍形貌;(c)裂纹沿晶间扩展
Fig. 4. Cracking phenomenon of X -Z planes in SLM-processed SRR99 samples. (a) Macroscopic morphology; (b)microscopic morphology; (c) crack propagation along crystal boundary
图 5. SLM沉积试样X-Z 面SEM组织。(a)底部;(b)中部
Fig. 5. SEM microstructures of SLM deposition sample. (a) Bottom; (b) middle
表 1SLM实验参数
Table1. Parameters for SLM process
|
潘爱琼, 张辉, 王泽敏. 镍基单晶高温合金选区激光熔化成形工艺及组织[J]. 中国激光, 2019, 46(11): 1102007. Aiqiong Pan, Hui Zhang, Zemin Wang. Process Parameters and Microstructure of Ni-Based Single Crystal Superalloy Processed by Selective Laser Melting[J]. Chinese Journal of Lasers, 2019, 46(11): 1102007.
PDF全文
