Details

Title

The Quality of Welded Connections Elements from the Steel 30HGS and Titanium Alloy Ti6Al4V

Journal title

Archives of Foundry Engineering

Yearbook

2012

Numer

No 2

Publication authors

Keywords

Heat Treatment ; Metallography ; Factography ; Microhardness ; welding ; Head Weld ; Titanium Alloy Ti6Al4V ; Steel 30HGS

Divisions of PAS

Nauki Techniczne

Description

Archives of Foundry Engineering continues the publishing activity started by Foundry Commission of the Polish Academy of Sciences (PAN) in Katowice in 1978. The initiator of it was the first Chairman Professor Dr Eng. Wacław Sakwa – Corresponding Member of PAN, Honorary Doctor of Czestochowa University of Technology and Silesian University of Technology. This periodical first name was „Solidification of Metals and Alloys” , and made possible to publish the results of works achieved in the field of the Basic Problems Research Cooperation. The subject of publications was related to the title of the periodical and concerned widely understand problems of metals and alloys crystallization in a casting mold. In 1978-2000 the 44 issues have been published. Since 2001 the Foundry Commission has had patronage of the annually published “Archives of Foundry” and since 2007 quarterly published “Archives of Foundry Engineering”. Thematic scope includes scientific issues of foundry industry:

  • Theoretical Aspects of Casting Processes,
  • Innovative Foundry Technologies and Materials,
  • Foundry Processes Computer Aiding,
  • Mechanization, Automation and Robotics in Foundry,
  • Transport Systems in Foundry,
  • Castings Quality Management,
  • Environmental Protection.

Abstract

The aim of that work was the evaluation of the quality of welded connections elements (welds) from the 30HGS steel and titanium alloy Ti6Al4V. The metallographic, factographic tests were used, and measurements of microhardness with the Vickers method. In the head weld of the 30HGS steel there were non-metallic partial division and bubbles observed. The average microhardness in the head connection was 320 HV0.1. There was no significant increase/decrease observed of microhardness in the head influence zone of the weld. There was a good condition of head connections observed, in accordance with the standard EN12517 and EN25817. In the head weld of Ti6Al4V titanium alloy there were single, occasional non-metallic interjections and bubbles observed. There were no cracks both on the weld, and on the border of the heat influence zone. The value of microhardness in head connection was in the range 300÷445 HV0.1. Reveal a very good condition of the head connections in accordance with the standard EN12517 and EN25817. The factographic tests prove the correctness of welded connections done and then heat treatment in case of steel and titanium alloy.

Publisher

The Katowice Branch of the Polish Academy of Sciences

Date

2012

Type

Artykuły / Articles

Identifier

ISSN 2299-2944

References

Balasubramaniana V. (2004), Effect of welding processes on toe cracking behaviour of pressure vessel grade steel, Engineering Failure Analysis, 11, 4, 575, doi.org/10.1016/j.engfailanal.2003.09.005 ; Balasubramanian T. (2011), Influence of welding processes on microstructure, tensile and impact properties of Ti-6Al-4V alloy joints, Transactions of Nonferrous Metals Society of China, 21, 6, 1253, doi.org/10.1016/S1003-6326(11)60850-9 ; Shaogang W. (2012), Investigation on the microstructure and mechanical properties of Ti-6Al-4V alloy joints with electron beam welding, Materials & Design, 36, 663, doi.org/10.1016/j.matdes.2011.11.068 ; Wanga J. (2010), Microstructure and mechanical performance of depositing CuSi3 Cu alloy onto 30CrMnSi steel plate by the novel consumable and non-consumable electrodes indirect arc welding, Materials & De-sign, 31, 4, 2253. ; Squillace A. (2012), Effect of welding parameters on morphology and mechanical properties of Ti-6Al-4V laser beam welded butt joints, Journal of Materials Processing Technology, 212, 2, 427, doi.org/10.1016/j.jmatprotec.2011.10.005 ; Jokinena T. (2003), High power Nd:YAG laser welding in manufacturing of vacuum vessel of fusion reactor, Fusion Engineering and Design, 69, 1-4, 349, doi.org/10.1016/S0920-3796(03)00071-1

DOI

10.2478/v10266-012-0056-3

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