Microstructural characterization of hydrogen induced cracking in TRIP-assisted steel by EBSD

被引：110
作者：
Laureys, A. [1 ]
Depover, T. [1 ]
Petrov, R. [1 ,2 ]
Verbeken, K. [1 ]
机构：
[1] Ghent Univ UGent, Dept Mat Sci & Engn, Technol Pk 903, B-9052 Ghent, Belgium
[2] Delft Univ Technol, Dept Mat Sci & Engn, Mekelweg 2, NL-2628 CD Delft, Netherlands
来源：
MATERIALS CHARACTERIZATION | 2016年 / 112卷
关键词：
TRIP; Hydrogen embrittlement; Tensile tests; Hydrogen induced cracking; SEM; EBSD; HIGH-STRENGTH STEELS; MULTIPHASE STEELS; PIPELINE STEEL; EMBRITTLEMENT; FRACTURE; TEXTURE; MODEL; IRON;
D O I：
10.1016/j.matchar.2015.12.017
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The present work evaluates hydrogen induced cracking by performing an elaborate EBSD (Electron BackScatter Diffraction) study in a steel with transformation induced plasticity (TRIP-assisted steel). This type of steel exhibits a multiphase microstructure which undergoes a deformation induced phase transformation. Additionally, each microstructural constituent displays a different behavior in the presence of hydrogen. The aim of this study is to obtain a better understanding on the mechanisms governing hydrogen induced crack initiation and propagation in the hydrogen saturated multiphase structure. Tensile tests on notched samples combined with in-situ electrochemical hydrogen charging were conducted. The tests were interrupted at stresses just after reaching the tensile strength, i.e. before macroscopic failure of the material. This allowed to study hydrogen induced crack initiation and propagation by SEM (Scanning Electron Microscopy) and EBSD. A correlation was found between the presence of martensite, which is known to be very susceptible to hydrogen embrittlement, and the initiation of hydrogen induced cracks. Initiation seems to occur mostly by martensite decohesion. High strain regions surrounding the hydrogen induced crack tips indicate that further crack propagation may have occurred by the HELP (hydrogen-enhanced localized plasticity) mechanism. Small hydrogen induced cracks located nearby the notch are typically S-shaped and crack propagation was dominantly transgranularly. The second stage of crack propagation consists of stepwise cracking by coalescence of small hydrogen induced cracks. (C) 2015 Elsevier Inc. All rights reserved.
引用
收藏
页码：169 / 179
页数：11
相关论文
共 40 条
[31]   Microstructure and texture of a lightly deformed TRIP-assisted steel characterized by means of the EBSD technique [J].
Petrov, Roumen ;
Kestens, Leo ;
Wasilkowska, Anna ;
Houbaert, Yvan .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2007, 447 (1-2) :285-297
[32]  
Randle V., 2000, INTRO TEXTURE ANAL M, P101
[33]   Electron backscatter diffraction: Strategies for reliable data acquisition and processing [J].
Randle, Valerie .
MATERIALS CHARACTERIZATION, 2009, 60 (09) :913-922
[34]   Hydrogen Embrittlement of Commercially Produced Advanced High Strength Sheet Steels [J].
Ronevich, J. A. ;
Speer, J. G. ;
Matlock, D. K. .
SAE INTERNATIONAL JOURNAL OF MATERIALS AND MANUFACTURING, 2010, 3 (01) :255-267
[35]   Hydrogen Effects in Prestrained Transformation Induced Plasticity Steel [J].
Ronevich, J. A. ;
De Cooman, B. C. ;
Speer, J. G. ;
De Moor, E. ;
Matlock, D. K. .
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2012, 43A (07) :2293-2301
[36]  
Troiano A.R., 1960, T ASM, V52, P54, DOI DOI 10.1007/S13632-016-0319-4
[37]   Role of crystallographic texture in hydrogen-induced cracking of low carbon steels for sour service piping [J].
Venegas, V. ;
Caleyo, F. ;
Hallen, J. M. ;
Baudin, T. ;
Penelle, R. .
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2007, 38A (05) :1022-1031
[38]   EBSD study of hydrogen-induced cracking in API-5L-X46 pipeline steel [J].
Venegas, V ;
Caleyo, F ;
González, JL ;
Baudin, T ;
Hallen, JM ;
Penelle, R .
SCRIPTA MATERIALIA, 2005, 52 (02) :147-152
[39]   Microtextural study of orientation change during nucleation and growth in a cold rolled ULC steel [J].
Verbeken, K ;
Kestens, L ;
Jonas, JJ .
SCRIPTA MATERIALIA, 2003, 48 (10) :1457-1462
[40]   FORMATION AND ANALYSIS OF STACK CRACKS IN A PIPELINE STEEL [J].
ZAKARIA, MYB ;
DAVIES, TJ .
JOURNAL OF MATERIALS SCIENCE, 1993, 28 (12) :3322-3328
1234