Compressive behavior of 420 stainless steel after asynchronous laser processing

M. P. Sealy; H. Hadidi; L. D. Sotelo; W. L. Li; J. A. Turner; J. A. McGeough

doi:10.1016/j.cirp.2020.04.059

Compressive behavior of 420 stainless steel after asynchronous laser processing

M. P. Sealy, H. Hadidi, L. D. Sotelo, W. L. Li, J. A. Turner, J. A. McGeough

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

Cold working layers during additive manufacturing improves toughness by imparting a complex glocal integrity across pre-designed internally reinforced domains. Understanding mechanical behavior by mapping glocal integrity across these domains is difficult due to highly heterogeneous compositions formed by cyclic printing and peening. Ultrasound is proposed as a rapid, non-destructive tool to measure glocal integrity that is sensitive to heterogeneous organization of microstructure and residual stress. This work examines compressive behavior and measures glocal integrity with ultrasonic wave speed and attenuation perpendicular to the build direction after cyclically coupling laser engineered net shaping (LENS®) with laser peening on 420 stainless steel.

Original language	English (US)
Pages (from-to)	169-172
Number of pages	4
Journal	CIRP Annals
Volume	69
Issue number	1
DOIs	https://doi.org/10.1016/j.cirp.2020.04.059
State	Published - 2020

Keywords

Additive manufacturing
Laser peening
Surface integrity

ASJC Scopus subject areas

Mechanical Engineering
Industrial and Manufacturing Engineering

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10.1016/j.cirp.2020.04.059

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title = "Compressive behavior of 420 stainless steel after asynchronous laser processing",

abstract = "Cold working layers during additive manufacturing improves toughness by imparting a complex glocal integrity across pre-designed internally reinforced domains. Understanding mechanical behavior by mapping glocal integrity across these domains is difficult due to highly heterogeneous compositions formed by cyclic printing and peening. Ultrasound is proposed as a rapid, non-destructive tool to measure glocal integrity that is sensitive to heterogeneous organization of microstructure and residual stress. This work examines compressive behavior and measures glocal integrity with ultrasonic wave speed and attenuation perpendicular to the build direction after cyclically coupling laser engineered net shaping (LENS{\textregistered}) with laser peening on 420 stainless steel.",

keywords = "Additive manufacturing, Laser peening, Surface integrity",

author = "Sealy, {M. P.} and H. Hadidi and Sotelo, {L. D.} and Li, {W. L.} and Turner, {J. A.} and McGeough, {J. A.}",

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T1 - Compressive behavior of 420 stainless steel after asynchronous laser processing

AU - Sealy, M. P.

AU - Hadidi, H.

AU - Sotelo, L. D.

AU - Li, W. L.

AU - Turner, J. A.

AU - McGeough, J. A.

PY - 2020

Y1 - 2020

N2 - Cold working layers during additive manufacturing improves toughness by imparting a complex glocal integrity across pre-designed internally reinforced domains. Understanding mechanical behavior by mapping glocal integrity across these domains is difficult due to highly heterogeneous compositions formed by cyclic printing and peening. Ultrasound is proposed as a rapid, non-destructive tool to measure glocal integrity that is sensitive to heterogeneous organization of microstructure and residual stress. This work examines compressive behavior and measures glocal integrity with ultrasonic wave speed and attenuation perpendicular to the build direction after cyclically coupling laser engineered net shaping (LENS®) with laser peening on 420 stainless steel.

AB - Cold working layers during additive manufacturing improves toughness by imparting a complex glocal integrity across pre-designed internally reinforced domains. Understanding mechanical behavior by mapping glocal integrity across these domains is difficult due to highly heterogeneous compositions formed by cyclic printing and peening. Ultrasound is proposed as a rapid, non-destructive tool to measure glocal integrity that is sensitive to heterogeneous organization of microstructure and residual stress. This work examines compressive behavior and measures glocal integrity with ultrasonic wave speed and attenuation perpendicular to the build direction after cyclically coupling laser engineered net shaping (LENS®) with laser peening on 420 stainless steel.

KW - Additive manufacturing

KW - Laser peening

KW - Surface integrity

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Compressive behavior of 420 stainless steel after asynchronous laser processing

Abstract

Keywords

ASJC Scopus subject areas

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