SEM-EDS Analysis and Microhardness Variations in Steel-Copper Braze Joint

Authors

  • Zainul Huda Department of Mechanical Engineering, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
  • Tuan Zaharinie Department of Mechanical Engineering, Center of Advanced Manufacturing & Material Processing (AMMP Center), University of Malaya 50603 Kuala Lumpur, Malaysia
  • Yusri Amir Department of Mechanical Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia

Keywords:

Copper • stainless steel • brazing • SEM-EDS • elemental distribution • mapping • microhardness

Abstract

This research paper reports the scanning electron microscopy and energy dispersive X-ray spectroscopy (SEM-EDS) analysis and microhardness variation in a stainless steel-copper braze joint. The brazing of copper with stainless steel has been performed at temperatures in the range of 640-680 °C for the time durations in the range of 5-15 min by using a copper-based brazing filler metal (BFM) under an argon gas atmosphere in a brazing furnace. Material’s chemistry of brazed samples has been studied by energy dispersive spectroscopy (EDS) system linked with a Phenom Pro X scanning electron microscope (Phenom Pro SEM). It has been found that Ni atoms from the BFM diffused into stainless steel owing to the better solid solubility of Ni in Fe than that of Cu in Fe.  A low Sn at.% was observed in the EDS image for BFM region; this elemental distribution has been attributed to the possibility of reaction of Sn with Fe to form an intermetallic compound: FeSn2. The spatial distribution of various elements has been studied by mapping analysis by using SEM-EDS technique for a brazed sample that showed the penetration depth of Ni and P to stainless steel and Copper regions. Microhardness measurements at various locations of the brazed sample have been made and analyzed. The microhardness data has been graphically analyzed and related to brazing parameters.

Cite as:

Zainul Huda, Tuan Zaharinie & Yusri Amir. (2020). SEM-EDS Analysis and Microhardness Variations in Steel-Copper Braze Joint. Journal of Technological Science & Engineering (JTSE), 01(01), 23–29. http://doi.org/10.5281/zenodo.3938010

Published

2020-07-10

How to Cite

Huda, Z., Zaharinie, T., & Amir, Y. (2020). SEM-EDS Analysis and Microhardness Variations in Steel-Copper Braze Joint. Journal of Technological Science & Engineering (JTSE), 1(1), 23-29. Retrieved from https://rsepress.org/index.php/jtse/article/view/9

Issue

Vol. 1 No. 1 (2020): July 2020

Section

Articles

Copyright (c) 2020 Journal of Technological Science & Engineering (JTSE)

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