scholarly journals Stress Corrosion Cracking Behavior of Fine-Grained AZ61 Magnesium Alloys Processed by Equal-Channel Angular Pressing

Metals ◽  
2017 ◽  
Vol 7 (9) ◽  
pp. 343 ◽  
Author(s):  
Qiuyuan Xie ◽  
Aibin Ma ◽  
Jinghua Jiang ◽  
Zhaojun Cheng ◽  
Dan Song ◽  
...  
Keyword(s):  
Stress Corrosion ◽  
Magnesium Alloys ◽  
Equal Channel Angular Pressing ◽  
Stress Corrosion Cracking ◽  
Corrosion Cracking ◽  
Cracking Behavior ◽  
Fine Grained ◽  
Angular Pressing

scholarly journals Stress Corrosion Cracking Behavior of Fine-Grained Al5083 Alloys Processed by Equal-Channel Angular Pressing (ECAP)

Molecules ◽  
2021 ◽  
Vol 26 (24) ◽  
pp. 7608
Author(s):  
Asiful H. Seikh ◽  
Muneer Baig ◽  
Ateekh Ur Rehman ◽  
Faraz H. Hashmi ◽  
Jabair A. Mohammed
Keyword(s):  
Strain Rate ◽  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Testing Machine ◽  
Corrosion Cracking ◽  
High Density ◽  
Ebsd Analysis ◽  
Tensile Testing Machine ◽  
Cracking Behavior ◽  
Fine Grained

In the present study, the stress corrosion cracking (SCC) behavior of ECAP Al5083 alloy was investigated in air as well as in 3.5 % NaCl solution using the slow strain rate tensile test (SSRT). The characteristics of grain boundary precipitates (GBPs), specifically the microchemistry of the SCC behavior of Al5083 alloys, both in “as-received” condition and when deformed by the ECAP process, were examined. The correlations between the SCC resistance and GBP microchemistry were examined. A microstructural evaluation was performed using an optical microscope. SCC tests were carried out using a universal tensile testing machine and the fracture surfaces were studied using scanning electron microscopy (SEM). A strain rate of 1×10−6 s−1 was applied for the SSRT. As the passes increased, the SCC susceptibility of the fine-grained ECAP Al5083 alloy also increased. Moreover, higher ultimate tensile strength and greater elongation were observed. This was due to grain refinement, high-density separations, and the expanded extent of high-density dislocations instigated by severe plastic deformation. Due to the high strength and elongation, the failure analysis showed a ductile mode of fracture. Electron backscattering diffraction (EBSD) analysis was performed to determine more clearly the nature of cracking. EBSD analysis showed that the crack propagation occurred in both transgranular and intergranular modes.

Stress corrosion cracking behaviors of RE-containing ME21 magnesium alloy processed by equal-channel angular pressing

2019 ◽  
Vol 37 (1) ◽  
pp. 88-94 ◽  
Author(s):  
Jinghua Jiang ◽  
Qiuyuan Xie ◽  
Mingshan Qiang ◽  
Aibin Ma ◽  
Evans-Kwesi Taylor ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Stress Corrosion ◽  
Equal Channel Angular Pressing ◽  
Stress Corrosion Cracking ◽  
Corrosion Cracking ◽  
Angular Pressing

Stress corrosion cracking behavior of magnesium alloys EV31A and AZ91E

2013 ◽  
Vol 583 ◽  
pp. 169-176 ◽  
Author(s):  
Bharat S. Padekar ◽  
V.S. Raja ◽  
R.K. Singh Raman ◽  
P. Lyon
Keyword(s):  
Stress Corrosion ◽  
Magnesium Alloys ◽  
Stress Corrosion Cracking ◽  
Corrosion Cracking ◽  
Cracking Behavior

scholarly journals Enhanced Stress Corrosion Cracking Resistance of Ultrafine-Grained Cu-Cr-Zr Alloy Fabricated via Equal-Channel Angular Pressing

Metals ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 824 ◽  
Author(s):  
Qingjuan Wang ◽  
Dan Liu ◽  
Libo Tong ◽  
Ying Zhou ◽  
Wei Wang ◽  
...  
Keyword(s):  
Stress Corrosion ◽  
Equal Channel Angular Pressing ◽  
Stress Corrosion Cracking ◽  
Volume Fraction ◽  
Corrosion Cracking ◽  
Coarse Grain ◽  
Angular Pressing ◽  
Ultrafine Grained ◽  
Zr Alloy ◽  
Zr Alloys

The microstructure evolution and stress corrosion cracking (SCC) behaviors of ultrafine-grained (UFG) Cu-Cr-Zr alloys processed by equal-channel angular pressing (ECAP) and coarse-grain (CG) Cu-Cr-Zr alloys within NaNO2 solution were systematically investigated in the current study. After deformation by eight ECAP passes, the grain size was refined to ~200 nm. The slow strain rate tensile (SSRT) tests showed that the ultimate tensile strength (UTS) of CG samples in solution was slightly lower than that in the air, and the elongation was decreased from 57.3% to 52.6%. In contrast, both the UTS and elongation of UFG samples in air and solution were almost identical. In NaNO2 solution, the CG fracture surface showed an obvious dissolution, microvoids, and minor cracks, while the surface of the UFG fracture was relatively smooth. The resistance of UFG samples to SCC could be significantly enhanced compared with CG samples. The grain boundary volume fraction of UFG alloy was dramatically increased, which reduced the formation of pitting corrosion. In addition, the uniform distribution of Cr particles also improved the corrosion resistance of UFG alloys.

STUDY OF MICROSTRUCTURE AND STRESS CORROSION CRACKING BEHAVIOR IN WELDING TRANSITION ZONE OF Ni--BASED ALLOYS

2011 ◽  
Vol 46 (10) ◽  
pp. 1258-1266 ◽  
Author(s):  
Juan HOU ◽  
Qunjia PENG ◽  
SHOJI Testuo ◽  
Jianqiu WANG ◽  
Wei KE ◽  
...  
Keyword(s):  
Stress Corrosion ◽  
Transition Zone ◽  
Stress Corrosion Cracking ◽  
Corrosion Cracking ◽  
Cracking Behavior
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