Impact toughness characteristics of sm570-tmc steel joint using welding wire containing 0.4% nickel at different level of heat input

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The study was conducted to evaluate the impact toughness of flux-cored arc welded of SM570-TMC steel joint under different heat inputs, 0.9 kJ/mm (low heat input) and 1.6 kJ/mm (high heat input). Welding wire containing 0.4%Ni was selected on this experiment. Multi-pass welds were performed on SM570-TMC steel plate of 16 mm in thickness with a single V-groove butt joint on flat position (1G). The evaluation consists of observations on microstructure using an optical microscope and SEM-EDS, and mechanical properties including tensile, microhardness Vickers and Charpy V-notch (CVN) impact test at temperatures of 25, 0 and-20 °C. Results showed that the impact toughness of the base metal (BM) was higher than the weld metal (WM) at all test temperatures. Hardness and impact toughness of WM at low heat input was observed higher than when applied a high heat input. The welded samples at low and high heat inputs had high of tensile strength, and the fracture seemly occurs on the BM. Microstructure observation showed that at a high heat input, larger grains and microsegregation were observed. It might affect on decreasing their impact property.

Original languageEnglish
Title of host publicationMechanical Engineering
Subtitle of host publicationAdvanced Materials Processing Technology
Editors Suwarno, Vivien Djanali, Fahmi Mubarok, Bambang Pramujati
PublisherTrans Tech Publications Ltd
Pages117-124
Number of pages8
ISBN (Print)9783035716870
DOIs
Publication statusPublished - 2020
Event4th International Conference on Mechanical Engineering, ICOME 2019 - Yogyakarta, Indonesia
Duration: 28 Aug 201929 Aug 2019

Publication series

NameKey Engineering Materials
Volume867 KEM
ISSN (Print)1013-9826
ISSN (Electronic)1662-9795

Conference

Conference4th International Conference on Mechanical Engineering, ICOME 2019
CountryIndonesia
CityYogyakarta
Period28/08/1929/08/19

Keywords

  • Heat input
  • Impact toughness
  • Microstructure
  • SM570-TMC
  • Weld metal

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