尺寸设计对选区激光熔化<strong>304L</strong>不锈钢显微组织与性能的影响

尺寸设计对选区激光熔化304L不锈钢显微组织与性能的影响

侯娟, 代斌斌, 闵师领, 刘慧, 蒋梦蕾, 杨帆

Influence of Size Design on Microstructure and Properties of 304L Stainless Steel by Selective Laser Melting

HOU Juan, DAI Binbin, MIN Shiling, LIU Hui, JIANG Menglei, YANG Fan

表5 T300系列样品晶粒尺寸与柱状晶分布统计结果

Table 5 Statistical results of grain size and columnar crystal morphology of T300 series samples

Sample	Grain size / μm	Rice-shaped columnar	Narrow-short columnar	Strip columnar
		(0-50 μm²) / %	(51-150 μm²) / %	(≥ 151 μm²) / %
T300-L100	18 ± 2	12.0	37.0	51.0
T300-L500	20 ± 2	11.7	32.0	56.3
T300-L700	23 ± 2	10.5	30.0	59.5
T300-L1000	25 ± 1	9.7	23.1	67.2