The influence of hydrogen on 3.5NiCrMoV steel studied using the linearly increasing stress test

详细信息    查看全文

• 作者：Qian Liu^a ; Bartolomeus Irwanto^b ; Andrej Atrens^a ; ^{Andrejs.Atrens@uq.edu.au}
• 关键词：A. Steel ; B. SEM ; C. Hydrogen embrittlement
• 刊名：Corrosion Science
• 出版年：2013
• 出版时间：February, 2013
• 年：2013
• 卷：67
• 期：Complete
• 页码：193-203
• 全文大小：1568 K

文摘

The linearly increasing stress test (LIST) was used to study the influence of hydrogen on 3.5NiCrMoV steel in acidified 0.1 M Na₂SO₄, pH 2 at increasingly negative applied potentials to ?1700 mV_Ag/AgCl. For specimens tested in solution with an applied potential, there were surface cracks in the necked region, but no surface cracks in the uniformly deformed part of the specimen. This implies that there was no influence of hydrogen up to the yield stress of the steel. Hydrogen induced brittle fracture events made a small contribution to the overall ductile fracture, which occurred after the onset of necking.