Effect of microstructure and temperature on the stress corrosion cracking of two microalloyed pipeline steels in H2S environment for gas transport

被引：27

作者：

Fragiel, A. ^{[1
]}

Serna, S. ^{[2
]}

Malo-Tamayo, J. ^{[3
]}

Silva, P. ^{[1
]}

Campillo, B. ^{[4
]}

Martinez-Martinez, E. ^{[5
]}

Cota, L. ^{[6
]}

Staia, M. H. ^{[7
,8
]}

Puchi-Cabrera, E. S. ^{[7
,9
]}

Perez, R. ^{[4
]}

机构：

[1] Inst Invest Cient IVIC, Ctr Fis, Lab Fis Mat Condensada, Apartado 20632,1020-A, Caracas, Venezuela

[2] UAEM, Ctr Invest Ingn & Ciencias Aplicadas, Av Univ 1001, Cuernavaca 62209, Morelos, Mexico

[3] Inst Nacl Elect & Energ Limpias, Av Reforma 113, Cuernavaca 62490, Morelos, Mexico

[4] Univ Nacl Autonoma Mexico, Fac Quim, Inst Ciencias Fis, Mexico City, DF, Mexico

[5] Univ Veracruzana, Inst Ingn, Unidad Anticorros, Xalapa, Veracruz, Mexico

[6] Univ Nacl Autonoma Mexico, CNyN, Mexico City, DF, Mexico

[7] Univ Cent Venezuela, Fac Ingn, Escuela Ingn Met & Ciencia Mat, Caracas, Venezuela

[8] Ctr Lille, MSMP, Arts & Metiers ParisTech, 8 Blvd Louis XIV, F-59000 Lille, France

[9] Univ Valenciennes, CNRS, LAMIH UMR 8201, F-59313 Valenciennes, France

来源：

ENGINEERING FAILURE ANALYSIS | 2019年 / 105卷

关键词：

Stress corrosion cracking; Hydrogen induced cracking; API X65 pipeline microalloyed steels; Ferrite-pearlite and martensitic microstructures; Effect of sour environments; HYDROGEN-INDUCED CRACKING; SULFIDE; MECHANISM; IRON; MN; DIFFUSION; FRACTURE; FILMS;

D O I：

10.1016/j.engfailanal.2019.06.028

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The stress corrosion cracking resistance of two API X65 microalloyed steels, with different microstructures has been evaluated both at room temperature and at 55 degrees C, by means of Linear Elastic Fracture Mechanics (LEFM) specimens known as MWOL (Modified WOL specimen), under constant displacement. The material with a ferritic-pearlitic microstructure showed crack tip dissolution, a transgranular crack growth mode and some evidence of Hydrogen Induced Cracking (HIC). At room temperature, besides crack propagation, decohesion between grain boundaries was also observed, as well as some cavitation at the front of the crack tip. The material with martensitic microstructure tested at room temperature showed a mixed transgranular-intergranular crack growth mode, without cavitation at the crack tip front. At 55 degrees C, the crack growth path observed was transgranular, with cracks longer than those observed at room temperature, indicating that some Hydrogen mechanisms, probably thermally activated, could be present in addition to the anodic dissolution mechanisms.

引用

页码：1055 / 1068

页数：14

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