Stress corrosion cracking susceptibility of ultra-fine grain copper produced by equal-channel angular pressing

2001 ◽  
Vol 318 (1-2) ◽  
pp. 122-128 ◽  
Author(s):  
T. Yamasaki ◽  
H. Miyamoto ◽  
T. Mimaki ◽  
A. Vinogradov ◽  
S. Hashimoto
Keyword(s):  
Stress Corrosion ◽  
Equal Channel Angular Pressing ◽  
Stress Corrosion Cracking ◽  
Corrosion Cracking ◽  
Angular Pressing ◽  
Fine Grain

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

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

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.

scholarly journals Stress Corrosion Cracking of a Forged Mg-Al-Zn Alloy with Different Surface Conditions

2018 ◽  
Vol 2018 ◽  
pp. 1-8 ◽  
Author(s):  
Zhongwei Yin ◽  
Fengjuan Liu ◽  
Dongdong Song ◽  
Shihuan He ◽  
Jun Lin ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Microarc Oxidation ◽  
Immersion Test ◽  
Corrosion Cracking ◽  
Bending Test ◽  
Secondary Phases ◽  
Surface Conditions ◽  
Fine Grain

Stress corrosion cracking (SCC) of a forged Mg-Al-Zn magnesium alloy with different surface conditions was studied by the four-point bending test and alternate immersion test in NaCl solution. The results showed that the bare Mg-Al-Zn magnesium alloy has low susceptivity to SCC, and no abrupt rupture happened after the immersion test for 5 days under an initial stress load of 0.15–0.75σ0.2. With microarc oxidation (MAO) coating, corrosion resistance was enhanced, but more surface cracks were induced, and microcracks could be detected inside corrosive pits when the load was 0.75σ0.2, which is similar to the bare alloy. The composite coating totally avoided both SCC and corrosion. The low susceptivity of the forged AQ80M alloy to SCC should be attributed to the fine grain size and even distribution of secondary phases around the grain boundary.

scholarly journals Effect of Grain Size on the Stress Corrosion Cracking of Ultrafine Grained Cu-10 wt% Zn Alloy in Ammonia

2017 ◽  
Vol 2017 ◽  
pp. 1-8 ◽  
Author(s):  
Takuma Asabe ◽  
Muhammad Rifai ◽  
Motohiro Yuasa ◽  
Hiroyuki Miyamoto
Keyword(s):  
Grain Size ◽  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Constant Load ◽  
Corrosion Cracking ◽  
Ultrafine Grain ◽  
Ammonia Vapor ◽  
Angular Pressing ◽  
Ultrafine Grained ◽  
Load Tests

The effect of grain size in the micron to submicron range on the stress corrosion cracking (SCC) of Cu-10 wt% Zn alloys was investigated using constant-load tests in ammonia vapor. The grain size was systematically varied from 4 μm to 0.12 μm by either cold-rolling or equal-channel angular pressing (ECAP), followed by annealing. The time to fracture increased with decreasing grain size above 1 μm but then began to decrease with decreasing grain size into the submicron range. This inverse trend in the submicron range is discussed in terms of a severe plastic deformation- (SPD-) induced ultrafine grain microstructure.

AMBRONZE 413

Alloy Digest ◽  
1969 ◽  
Vol 18 (6) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Physical Properties ◽  
Surface Treatment ◽  
Stress Corrosion ◽  
Tensile Properties ◽  
Stress Corrosion Cracking ◽  
Electrical Contact ◽  
Heat Treating ◽  
Corrosion Cracking ◽  
Tin Bronze

Abstract AMBRONZE 413 is a copper-tin bronze recommended for plater's plates and electrical contact springs. It is relatively immune to stress-corrosion cracking. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: Cu-201. Producer or source: Anaconda American Brass Company.

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