Preprint Article Version 1 This version is not peer-reviewed

Effect of PWHT Temperature and Time on Hardness and Microstructure of 410NiMo Weld Metal

Version 1 : Received: 7 November 2018 / Approved: 7 November 2018 / Online: 7 November 2018 (16:24:42 CET)

How to cite: Özdemir, U.; Keskinkılıç, S.; Acar, F.K.; Kabakci, F.; Acarer, M. Effect of PWHT Temperature and Time on Hardness and Microstructure of 410NiMo Weld Metal. Preprints 2018, 2018110182 (doi: 10.20944/preprints201811.0182.v1). Özdemir, U.; Keskinkılıç, S.; Acar, F.K.; Kabakci, F.; Acarer, M. Effect of PWHT Temperature and Time on Hardness and Microstructure of 410NiMo Weld Metal. Preprints 2018, 2018110182 (doi: 10.20944/preprints201811.0182.v1).

Abstract

ASTM A743 CA6NM alloy is a martensitic stainless steel typically used in energy industry -runners and hydraulic turbine components- due to its superior toughness, yield and fatigue properties. In both the manufacturing, shielded metal arc welding is applied to join for this grade steels. However, weldability of the steels is limited due to formation of hard and brittle phases such as untempered martensite during welding and post weld heat treatment processes. The formation causes a reduction in toughness. In this study, influence of post-weld heat treatment procedure (single tempering and double tempering) and parameters on microstructure and hardness of AWS410NiMo all weld metal. Hardness tests were conducted from weld metal. Microstructures of the all weld metals subjected to different heat treatment process were characterized.

Subject Areas

410NiMo, all weld metal, heat treatment, hardness, microstructure

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