Intergranular corrosion of feedstock modified – additively manufactured stainless steel after sensitization

IF 1.1 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Pub Date : 2023-04-12 DOI:10.5006/4245

V. B. Vukkum, Evan DelVecchio, S. Storck, R. Gupta

引用次数: 1

Abstract

Laser powder bed fusion (LPBF), a metal additive manufacturing technique, was conducted on feedstock-modified 316L stainless steel (316L) powder produced by ball-milling of commercial 316L and 1 wt.% additive (Cerium oxide – CeO2, lanthanum (III) nitrate hexahydrate – La(NO3)3.6H2O and chromium nitride – CrN). The feedstock-modified LPBF-316L specimens were sensitized at 675 ℃ for 24 hours, and the influence of additives on intergranular corrosion (IGC) was investigated following ASTM G108-94 and A262-14 standards. The LPBF-316L with La(NO3)3.6H2O showed higher IGC resistance. The microstructure of the LPBF specimen was investigated and correlated to understand the improved IGC resistance of LPBF-316L with La(NO3)3.6H2O additive.

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敏化后原料改性-添加制造不锈钢的晶间腐蚀

激光粉末床熔融（LPBF）是一种金属增材制造技术，对通过球磨商业316L和1wt.%添加剂（氧化铈-CeO2、六水合硝酸镧（III）-La（NO3）3.6H2O和氮化铬-CrN）生产的原料改性316L不锈钢（316L）粉末进行了研究。原料改性的LPBF-316L试样在675℃下敏化24小时，并按照ASTM G108-94和A262-14标准研究了添加剂对晶间腐蚀（IGC）的影响。La（NO3）3.6H2O的LPBF-316L具有较高的IGC电阻。研究并关联了LPBF试样的微观结构，以了解添加La（NO3）3.6H2O的LPBF-316L改善的IGC电阻。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Corrosion MATERIALS SCIENCE, MULTIDISCIPLINARY-METALLURGY & METALLURGICAL ENGINEERING

CiteScore

2.80

自引率

12.50%

发文量

审稿时长

3 months

期刊介绍： CORROSION is the premier research journal featuring peer-reviewed technical articles from the world’s top researchers and provides a permanent record of progress in the science and technology of corrosion prevention and control. The scope of the journal includes the latest developments in areas of corrosion metallurgy, mechanisms, predictors, cracking (sulfide stress, stress corrosion, hydrogen-induced), passivation, and CO2 corrosion. 70+ years and over 7,100 peer-reviewed articles with advances in corrosion science and engineering have been published in CORROSION. The journal publishes seven article types – original articles, invited critical reviews, technical notes, corrosion communications fast-tracked for rapid publication, special research topic issues, research letters of yearly annual conference student poster sessions, and scientific investigations of field corrosion processes. CORROSION, the Journal of Science and Engineering, serves as an important communication platform for academics, researchers, technical libraries, and universities. Articles considered for CORROSION should have significant permanent value and should accomplish at least one of the following objectives: • Contribute awareness of corrosion phenomena, • Advance understanding of fundamental process, and/or • Further the knowledge of techniques and practices used to reduce corrosion.