Nano-mechanical Behavior of H13 Tool Steel Fabricated by a Selective Laser Melting Method

Nano-mechanical properties of selective laser melted H13 steel at a scan laser speed of 100 mm/s were investigated using nanoindentation tests. The findings shed light on the interrelationship between the nanoindentation strain rate and hardness. It was found that the strain-rate sensitivity exponen...

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Bibliographic Details
Published in:Metallurgical and materials transactions. A, Physical metallurgy and materials science Physical metallurgy and materials science, 2019-02, Vol.50 (2), p.523-528
Main Authors: Nguyen, Van Luong, Kim, Eun-ah, Yun, Jaecheol, Choe, Jungho, Yang, Dong-yeol, Lee, Hak-sung, Lee, Chang-woo, Yu, Ji-Hun
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemistry and Materials Science
Communication
Laser beam melting
Lasers
Materials Science
Mechanical properties
Metallic Materials
Nanoindentation
Nanotechnology
Rapid prototyping
Strain rate sensitivity
Structural Materials
Surfaces and Interfaces
Thin Films
Tool steels
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Summary:Nano-mechanical properties of selective laser melted H13 steel at a scan laser speed of 100 mm/s were investigated using nanoindentation tests. The findings shed light on the interrelationship between the nanoindentation strain rate and hardness. It was found that the strain-rate sensitivity exponent ( m  = 0.022) of this material indicated that the nanoindentation hardness increased in a range of (8.41 to 9.18) GPa with an increase in the strain rate ranging from 0.002 to 0.1 s −1 .
ISSN:1073-5623
1543-1940
DOI:10.1007/s11661-018-5024-2