PSI - Issue 22

Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2019) 000 – 000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2019) 000 – 000

www.elsevier.com/locate/procedia

www.elsevier.com/locate/procedia

ScienceDirect

Procedia Structural Integrity 22 (2019) 59–63

© 2019 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of the First International Symposium on Risk and Safety of Complex Structures and Components organizers © 2019 The Authors. Published by Elsevier B.V.This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of the First International Symposium on Risk and Safety of Complex Structures and Components organizers Abstract Fatigue prop ties of Q500D advanced high strength steel (AHSS) with a m dium plate thickness welded by both hybrid plasma a c welding (HPAW) proc ss and regular GMAW proces we investigated. Compare to regula GMAW process, HPAW joint showed longer . Both optical microscope and electron microscope analysis were carried out to investigate the fracture origin. It showed that the HPAW process provides less stress concentration and less facture origin than GMAW, which guaranteed the fatigue life of weld joint. © 2019 The Autho s. Publ shed by Elsev er B.V.This is an open access article u er the CC BY-NC-ND li ense (http://crea ivecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of the First International Symposium on Risk and Safety of Complex Structures and Components organizers First International Symposium on Risk and Safety of Complex Structures and Components Fatigue Properties of Advanced High Strength Steel Plate Welded by Hybrid Plasma Arc Welding Xiaoteng Wang * , Zhimin Luo, Yanbin Liu * , Ling Fu State Key Laboratory of Key Technologies on Construction Machinery, Zoomlion Heavy Industry Science & Technology Development Co., Ltd. #361, South Yinpen Road, Changsha, 410013, China Abstract Fatigue properties of Q500D advanced high strength steel (AHSS) with a medium plate thickness welded by both hybrid plasma arc welding (HPAW) process and regular GMAW process were investigated. Compare to regular GMAW process, HPAW joint showed longer fatigue life. Both optical microscope and electron microscope analysis were carried out to investigate the fracture origin. It showed that the HPAW process provides less stress concentration and less facture origin than GMAW, which guaranteed the fatigue life of weld joint. First International Symposium on Risk and Safety of Complex Structures and Components Fatigue Properties of Advanced High Strength Steel Plate Welded by Hybrid Plasma Arc Welding Xiaoteng Wang * , Zhimin Luo, Yanbin Liu * , Ling Fu State Key Laboratory of Key Technologies on Construction Machinery, Zoomlion Heavy Industry Science & Technology Development Co., Ltd. #361, South Yinpen Road, Changsha, 410013, China Keywords: High Strength Steel, Hybrid Plasma Arc Welding, Gas Metal Arc Welding, Fatigue, Residual Stresses

Keywords: High Strength Steel, Hybrid Plasma Arc Welding, Gas Metal Arc Welding, Fatigue, Residual Stresses

* Corresponding author. Tel.: +86 731 88928125. E-mail address: wangxt@zoomlion.com, liuyb@zoomlion.com 1. Introduction * Corresponding author. Tel.: +86 731 88928125. E-mail address: wangxt@zoomlion.com, liuyb@zoomlion.com 1. Introduction

2452-3216 © 2019 The Authors. Published by Elsevier B.V.This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review statement: Peer-review under responsibility of the First International Symposium on Risk and Safety of Complex Structures and Components organizers AHSS have been widely used in modern industries such as automobile industry, construction machinery industry, offshore engineering industry, etc. However, due to their relatively higher carbon equivalent value, the conventional GMAW of AHSS is more difficult than ordinary low carbon steels. Thus new joining method that can weld AHSS at higher efficiency and without pre/post heating is needed. 2452-3216 © 2019 The Authors. Published by Elsevier B.V.This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review statement: Peer-review under responsibility of the First International Symposium on Risk and Safety of Complex Structures and Components organizers AHSS have been widely used in modern industries such as automobile industry, construction machin ry industry, offshor engi eering industry, etc. How ver, due to their relatively higher carbon equivalent value, the conventional GMAW of AHSS is more difficult than ordinary low carbon steels. Thus new joining method that can weld AHSS at higher efficiency and without pre/post heating is needed.

2452-3216 © 2019 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of the First International Symposium on Risk and Safety of Complex Structures and Components organizers 10.1016/j.prostr.2020.01.008