Microstructural characterization of laser surface-melted Inconel 718

被引：5
|
作者：
Sharma, Sumit K. [1 ]
Biswas, K. [1 ]
Nath, A. K. [2 ]
Manna, I. [1 ]
Majumdar, J. Dutta [1 ]
机构：
[1] Indian Inst Technol, Dept Met & Mat Engn, Kharagpur 721302, W Bengal, India
[2] Indian Inst Technol, Dept Mech Engn, Kharagpur 721302, W Bengal, India
来源：
JOURNAL OF OPTICS-INDIA | 2020年 / 49卷 / 04期
关键词：
Laser surface melting; Inconel; 718; Microstructures; Microhardness; NICKEL-BASE SUPERALLOY; MECHANICAL-PROPERTIES; EVOLUTION; BEHAVIOR; ALLOY; PRECIPITATION; ROUGHNESS; WELDS;
D O I：
10.1007/s12596-020-00649-9
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
In the present study, a detailed study of the effect of laser parameters on microstructure and phases of the laser surface-melted (using 2 kW continuous wave Yb-fibre laser) Inconel 718 has been carried out. Surface melting has been conducted with a power of 400 watts, scan speed of 500, 750, and 1000 mm/min and with a spot diameter of 3 mm. After laser surface melting, the microstructures, phase, surface roughness and crystallographic orientation (texture) of the melt zone has been carried out. There is refinement of microstructure and change in crystallographic texture which varied with process parameters. The effect of process parameters on the microhardness of the melt zone has been studied in detail.
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页码：494 / 509
页数：16
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