TY - JOUR
T1 - Effect of shielding gas and energy input rate on the surface geometry and microstructure of a microalloyed steel surface melted with a TIG torch
AU - Munoz De Escalona, P.
AU - Mridha, S.
AU - Baker, T. N.
N1 - Acceptance from webpage
12 months embargo
Author start date at GCU is after acceptance and affiliated to other UK HEI on VoR > applied exception 254a. ET 13/11/19
YYYY only for final pub date, used DD/MM/YYYY from Crossref. ET 11/12/20
PY - 2017/10/2
Y1 - 2017/10/2
N2 - Surface engineering techniques are used to enhance surface properties, such as wear, erosion and/or corrosion of materials, by developing a functionally graded metal matrix composite layer. Recently, as an economic alternative to laser processing, a tungsten inert gas torch has been used to incorporate ceramic particles into a metal surface. This produced about 1 µm depth melted and resolidified track on the surface, which during processing, required protection by from oxygen and hydrogen environment, by a shielding gas. The present study analysed the effect of three shielding gases argon, helium, and nitrogen, on the melt zone morphology, microstructure and hardness after melting a microalloyed steel surface under different energy input conditions. The aim was to determine the optimum conditions for future research related to surface engineering, incorporating ceramic particles. The results show that when protected by argon and using energy inputs 420 J/mm. It was also found, that compared to nitrogen, using argon and helium, a re-solidified homogeneous and consistent cross- section developed along the melted track.
AB - Surface engineering techniques are used to enhance surface properties, such as wear, erosion and/or corrosion of materials, by developing a functionally graded metal matrix composite layer. Recently, as an economic alternative to laser processing, a tungsten inert gas torch has been used to incorporate ceramic particles into a metal surface. This produced about 1 µm depth melted and resolidified track on the surface, which during processing, required protection by from oxygen and hydrogen environment, by a shielding gas. The present study analysed the effect of three shielding gases argon, helium, and nitrogen, on the melt zone morphology, microstructure and hardness after melting a microalloyed steel surface under different energy input conditions. The aim was to determine the optimum conditions for future research related to surface engineering, incorporating ceramic particles. The results show that when protected by argon and using energy inputs 420 J/mm. It was also found, that compared to nitrogen, using argon and helium, a re-solidified homogeneous and consistent cross- section developed along the melted track.
KW - surface engineering
KW - TIG
KW - argon shielding
KW - gas
KW - microhardness determination
KW - energy input
U2 - 10.1080/2374068X.2017.1350021
DO - 10.1080/2374068X.2017.1350021
M3 - Article
VL - 3
SP - 550
EP - 562
JO - Advances in Materials and Processing Technologies
JF - Advances in Materials and Processing Technologies
SN - 2374-068X
IS - 4
ER -