Investigation on the Corrosion Behavior of Cast and Extrude AZ61 Mg Alloys in NaCl Atmosphere at High Temperature and Pressure

2015 ◽  
Vol 1120-1121 ◽  
pp. 1034-1039
Author(s):  
Yun Tian ◽  
Li Jun Feng ◽  
Tian Zheng Wang
Keyword(s):  
Grain Size ◽  
High Temperature ◽  
Magnesium Alloy ◽  
Corrosion Behavior ◽  
Extrusion Process ◽  
Corrosion Products ◽  
Corrosion Mechanism ◽  
Process Change ◽  
High Temperature And Pressure ◽  
Temperature And Pressure

We chose cast and extrude magnesium alloy AZ61 as materials and studied the influences of temperature, humidity, pressure and NaCl atmosphere on the corrosion products and corrosion mechanism by means of SEM, EDS and XRD. we could indicate the corr osion rate of extruded AZ61 magnesium is faster than that of cast AZ61 magnesium. Both th e rearrange of second ph ase and smaller grain size, which owing to the extrusion process, change the morphologies of corrosion products.

Influence of Alloying Element on Corrosion Behavior of Hastelloy C-276 in Supercritical Water

2014 ◽  
Vol 525 ◽  
pp. 40-44
Author(s):  
Xing Ying Tang ◽  
Shu Zhong Wang ◽  
Yan Hui Li ◽  
Li Li Qian
Keyword(s):  
High Temperature ◽  
Synergistic Effect ◽  
Supercritical Water ◽  
Graphite Furnace ◽  
Corrosion Mechanism ◽  
Alloying Element ◽  
High Temperature And Pressure ◽  
Graphite Furnace Atomic Absorption ◽  
Temperature And Pressure ◽  
Low Solubility

The corrosion tests of Cr, Fe and Ni of Hastelloy C-276 were studied at high temperature and pressure with different aggressive components. The results were investigated by means of graphite furnace atomic absorption spectrophotometer (AAS). The Cr forms stable oxide and NiO is unstable. There is a synergistic effect between salt and oxygen leading to a severe loss of metals. The PO43- can improve the resistance to corrosion for Hastelloy C-276 due to the low-solubility phosphates. The colors of effluences can better support the changed concentrations of metals. The lost metals can reveal the corrosion mechanism of Ni-based alloys.

scholarly journals Corrosion Behavior of Stainless and Carbon Steels in High Temperature and Pressure Water Systems with Addition of Zr and Si Compounds

2000 ◽  
Vol 49 (3) ◽  
pp. 166-169
Author(s):  
Isao Sekine ◽  
Takashi Tai ◽  
Yoshimi Maeda ◽  
Makoto Yuasa ◽  
Takashi Honda ◽  
...  
Keyword(s):  
High Temperature ◽  
Corrosion Behavior ◽  
Water Systems ◽  
Carbon Steels ◽  
High Temperature And Pressure ◽  
Pressure Water ◽  
Temperature And Pressure

scholarly journals Fatigue simulation of a short fiber re-inforced oil-filter under high temperature and pressure load

2018 ◽  
Vol 213 ◽  
pp. 207-214 ◽  
Author(s):  
Michael Hack ◽  
Wolfgang Korte ◽  
Stefan Sträßer ◽  
Matthias Teschner
Keyword(s):  
High Temperature ◽  
Short Fiber ◽  
Pressure Load ◽  
High Temperature And Pressure ◽  
Temperature And Pressure

Improving Corrosion Resistance of Hot Extruded Mg-Sn-Al-Ce Magnesium Alloy by Rapid Solidification

2017 ◽  
Vol 904 ◽  
pp. 80-84 ◽  
Author(s):  
Peng Cheng ◽  
Yun Gui Chen ◽  
Wu Cheng Ding
Keyword(s):  
Corrosion Resistance ◽  
Magnesium Alloy ◽  
Rapid Solidification ◽  
Corrosion Behavior ◽  
Corrosion Products ◽  
Uniform Particles

The corrosion behavior and microstructure of hot extruded Mg-5 wt.%Sn-4 wt.%Al-2 wt.%Ce alloy by rapid solidification ribbon (RS-EX TAE542) are investigated. The results shows that corrosion resistance of RS-EX alloy is remarkably improved, compared with that of hot extruded TAE542 alloy by homogenized ingot (HI-EX TAE542). Relatively compact corrosion products and bedded corrosion surface of RS-EX alloy is connected with the fine grains and uniform particles caused by rapid solidification, and they can suppress the corrosion reactions.

Creep Modeling of Welded Joints Using the Theta Projection Concept and Finite Element Analysis

1999 ◽  
Vol 122 (1) ◽  
pp. 22-26 ◽  
Author(s):  
M. Law ◽  
W. Payten ◽  
K. Snowden
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
High Temperature ◽  
Welded Joints ◽  
Creep Model ◽  
Projection Data ◽  
Predictive Capability ◽  
Element Analysis ◽  
High Temperature And Pressure ◽  
Temperature And Pressure

Modeling of welded joints under creep conditions with finite element analysis was undertaken using the theta projection method. The results were compared to modeling based on a simple Norton law. Theta projection data extends the accuracy and predictive capability of finite element modeling of critical structures operating at high temperature and pressure. In some cases analyzed, it was found that the results diverged from those gained using a Norton law creep model. [S0094-9930(00)00601-6]

High temperature and pressure rheological experiments on felsic granulite

2020 ◽  
Author(s):  
Dapeng Wen ◽  
Yongfeng Wang ◽  
Junfeng Zhang ◽  
Pengxiao Li ◽  
Zhen-Min Jin
Keyword(s):  
High Temperature ◽  
High Temperature And Pressure ◽  
Temperature And Pressure ◽  
Rheological Experiments
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