Investigation of the parameters of direct laser growing and subsequent processing to obtain a defect-free structure of a material made of a heat-resistant EP648 alloy

Abstract This paper presents the development of stable modes of additive technology of direct laser growing, using the starting material - a metal powder made of heat-resistant EP648 alloy of Russian production. The subsequent heat treatment of the manufactured samples was tested in order to avoid the formation of cracks in the structure of the material formed as a result of the presence of internal stresses after surfacing. Recommendations for further research are given.

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Structure and properties of Ti-6Al-4V titanium alloy products obtained by direct laser deposition and subsequent heat treatment

Journal of Physics Conference Series ◽

10.1088/1742-6596/1109/1/012061 ◽

2018 ◽

Vol 1109 ◽

pp. 012061 ◽

Cited By ~ 2

Author(s):

O G Klimova-Korsmik ◽

G A Turichin ◽

S A Shalnova ◽

M O Gushchina ◽

V V Cheverikin

Keyword(s):

Heat Treatment ◽

Titanium Alloy ◽

Subsequent Heat Treatment ◽

Laser Deposition ◽

Structure And Properties ◽

Direct Laser Deposition ◽

Direct Laser

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Sterilization of Heat-Resistant Spores by a Combination of High-Pressure and Subsequent Heat Treatment

The Review of High Pressure Science and Technology ◽

10.4131/jshpreview.25.334 ◽

2015 ◽

Vol 25 (4) ◽

pp. 334-342 ◽

Cited By ~ 1

Author(s):

Miyuki OGINO ◽

Tadayuki NISHIUMI

Keyword(s):

Heat Treatment ◽

High Pressure ◽

Subsequent Heat Treatment ◽

Heat Resistant

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Errata: Sterilization of Heat-Resistant Spores by a Combination of High-Pressure and Subsequent Heat Treatment

The Review of High Pressure Science and Technology ◽

10.4131/jshpreview.26.76 ◽

2016 ◽

Vol 26 (1) ◽

pp. 76-76

Author(s):

Miyuki OGINO ◽

Tadayuki NISHIUMI

Keyword(s):

Heat Treatment ◽

High Pressure ◽

Subsequent Heat Treatment ◽

Heat Resistant

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The Study of the Ageing Impact on Workability and Hardness of the Samples Made of Alloy VV751P (Ni-15Co-10Cr) after Selective Laser Sintering

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.746.192 ◽

2017 ◽

Vol 746 ◽

pp. 192-197 ◽

Cited By ~ 2

Author(s):

Andrey V. Balaykin ◽

Ekaterina A. Nosova ◽

Natalia V. Galkina

Keyword(s):

Heat Treatment ◽

Ambient Temperature ◽

Metal Powder ◽

Experimental Research ◽

Work Ability ◽

Selective Laser Sintering ◽

Laser Sintering ◽

Heat Resistant ◽

Work Ability Assessment ◽

Alloy Heat

Work is focused on study of workability changing of heat resistant nickel-based Ni-15Co-10Cr alloy produced by selective laser sintering from metal powder. Experimental research of HRC hardness changing was provided on plate samples 2х10х30 mm after sintering and typical heat treatment for this alloy. Heat treatment was: annealing at temperature of 1,000oС during 1.5 hours, and then at the temperature of 1,180oC for 2.5 h – 3 h. After that samples were treated in a furnace for 50 – 60 minutes at the temperature of 1,050oС. Then they were cooled-off to the temperature of 1,000oС during 50 – 60 minutes. After that they were further quenched at ambient temperature. After quenching the samples were subjected to ageing at the temperature of 850oC during 3, 6, 9, 12 and 15 hours. The bending and measurement of triangle height was proposed for work ability assessment of samples. Increased hardness was found with duration of ageing. Work ability grew up with duration of ageing but where was a gap of workability for 9 hours ageing. Calibration of sintered parts and samples are recommended to perform after quenching and ageing at 850oC no longer 6 hours.

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