激光与光电子学进展, 2020, 57 (3): 031404, 网络出版: 2020-02-17 复制并引用该论文  本文已被引 5 次  被引通知

图 & 表

图 1. GH4169粉末形貌图

Fig. 1. GH4169 powder morphology

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图 2. SLM工艺成形的GH4169试块

Fig. 2. Test specimens of GH4169 alloy formed by SLM

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图 3. 不同工艺参数下试块的致密度

Fig. 3. Relative density of samples prepared by different process parameters

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图 4. 不同工艺参数下GH4169试块的金相微观组织

Fig. 4. Metallographic microstructures of GH4169 samples prepared by different process parameters

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图 5. 不同工艺参数的GH4169试块熔池组织。(a) 1号参数;(b) 2号参数;(c) 3号参数

Fig. 5. Melt pool morphology of GH4169 samples prepared by different process parameters. (a) No. 1 parameter; (b) No. 2 parameter; (c) No. 3 parameter

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图 6. 不同参数下GH4169组织形貌的高倍成像。(a) 1号参数;(b) 2号参数; (c) 3号参数

Fig. 6. Microstructure morphology of GH4169 samples prepared by different process parameters. (a) No. 1 parameter; (b) No. 2 parameter; (c) No. 3 parameter

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表 1GH4169粉末的设计成分与实测成分

Table1. Designed composition and tested composition of GH4169 powder

Element C Cr Ni Co Mo Al Ti Nb Fe Designed mass fraction /% 0.02-0.06 17-21 50-55 ≤1.0 2.8-3.3 0.3-0.7 0.75-1.15 5.0-5.5 Bal. Tested mass fraction /% 0.036 18.7 53.83 <0.1 3.23 0.44 0.93 5.19 Bal.

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表 2其他学者提出的能量输入密度模型

Table2. Energy input density model proposed by other researchers

No. First author Model Physical significance Ref. 1 Morgan φ1=4Pπνs Energy input of one unit area in one unit time [17] 2 Simchi φ2=Pνdh Energy input of one unit volume in one unit time [18] 3 Simchi φ3=Pνsh Energy input of one unit volume in one unit time [19] 4 Yadroitsev φ4=Pν Energy input in one unit time [20]

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表 3能量输入密度表

Table3. Table of energy input density

Scanningspeed /(m·s-1) Energy input density /(W·s·m-1) 200 W 230 W 260 W 290 W 320 W 350 W 0.6 333.3333 383.3333 433.3333 483.3333 533.3333 583.3333 0.9 222.2222 255.5556 288.8889 322.2222 355.5556 388.8889 1.2 166.6667 191.6667 216.6667 241.6667 266.6667 291.6667 1.5 133.3333 153.3333 173.3333 193.3333 213.3333 233.3333 1.8 111.1111 127.7778 144.4444 161.1111 177.7778 194.4444 2.1 95.2381 109.5238 123.8095 138.0952 152.3810 166.6667

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表 4不同激光功率及扫描速度下的试块致密度

Table4. Sample relative density prepared by various laser powers and scanning speeds

Scanning speed /(m·s-1) Relative density /% 200 W 230 W 260 W 290 W 320 W 350 W 0.6 97.70 96.70 98.10 98.20 96.10 97.50 0.9 98.20 96.80 97.40 98.30 98.40 97.30 1.2 98.90 97.80 99.60 98.40 97.00 98.30 1.5 97.90 98.50 99.10 99.70 97.70 98.40 1.8 92.90 96.20 98.20 99.50 99.00 97.90 2.1 89.80 92.70 95.60 96.80 97.40 98.20

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张国会, 郭绍庆, 黄帅, 周标, 闫泰起, 陈冰清, 张学军. 选区激光熔化技术制备GH4169合金的致密度研究[J]. 激光与光电子学进展, 2020, 57(3): 031404. Guohui Zhang, Shaoqing Guo, Shuai Huang, Biao Zhou, Taiqi Yan, Bingqing Chen, Xuejun Zhang. Relative Density of GH4169 Superalloy Prepared by Selective Laser Melting[J]. Laser & Optoelectronics Progress, 2020, 57(3): 031404.