Interpass temperature effects on WAAM ER316L stainless steel corrosion using potentiostatic pulse tests

被引：3

作者：

Penot, Corentin ^{[1
,2
]}

Wharton, Julian ^{[1
]}

Addison, Adrian ^{[3
]}

Wang, Yikun ^{[4
]}

Lu, Qing ^{[3
]}

机构：

[1] Univ Southampton, Fac Engn & Phys Sci, Natl Ctr Adv Tribol Southampton nCATS, Southampton, England

[2] Natl Struct Integr Res Ctr NSIRC, Granta Pk, Cambridge, England

[3] TWI Ltd, Granta Pk, Cambridge, England

[4] Hampshire Corp Par, Global Technol Ctr, Lloyds Register EMEA, Hampshire House,Burgess Rd, Eastleigh, England

来源：

NPJ MATERIALS DEGRADATION | 2023年 / 7卷 / 01期

关键词：

SIGMA-PHASE PRECIPITATION; MECHANICAL-PROPERTIES; MICROSTRUCTURE; WIRE; RESISTANCE; MODE; INITIATION; BEHAVIOR; CMT;

D O I：

10.1038/s41529-023-00408-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of interpass temperature on the microstructure and pit nucleation behaviour in wire and arc additive manufacturing (WAAM) deposited ER316L stainless steel is investigated. Lowering the interpass temperature increases the ferrite content and decreases the sigma phase precipitation. Potentiostatic pulse measurements show that the WAAM ER316L pits develop predominantly near sigma phases and have higher pit density compared to a wrought 316L (UNS S31600). The pitting susceptibility of WAAM ER316L increases with increasing interpass temperature due to the precipitation of larger sigma phase enhancing the elemental segregation.

引用

页数：11

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