Effect of Cr and Zr Dopes on Hydrogen Behaviour in Rapidly Solidified Aluminium Foils

Hydrogen (H) behaviour in materials was investigated in rapidly solidified (RS) foils of pure aluminium (Al), Al-0.4 Cr and Al-0.25 Zr alloys (at %) by means of thermal desorption spectroscopy (TDS). In addition, Al-0.25; 0.3 Zr alloys were examined with respect to microstructure and its instability during the thermal process using SEM and microhardness measurements. The effect of dopes and heating rate on H desorption was summarized. The lowest energy desorption is attributed with significant thermal desorption peak which temperature was found is correlated with sample composition.

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The Role of Cr in H Desorption Kinetics in Rapidly Solidified Al

Materials Science Forum ◽

10.4028/www.scientific.net/msf.783-786.264 ◽

2014 ◽

Vol 783-786 ◽

pp. 264-269 ◽

Cited By ~ 3

Author(s):

Iya I. Tashlykova-Bushkevich ◽

Keitaro Horikawa ◽

Goroh Itoh

Keyword(s):

High Temperature ◽

Thermal Desorption ◽

High Purity ◽

Thermal Desorption Spectroscopy ◽

Secondary Phase ◽

Hydrogen Desorption ◽

Oxide Surface ◽

Desorption Kinetics ◽

Hydrogen Trapping ◽

Rapidly Solidified

Hydrogen desorption kinetics for rapidly solidified high purity Al and Al-Cr alloy foils containing 1.0, 1.5 and 3.0 at % Cr were investigated by means of thermal desorption analysis (TDA) at a heating rate of 3.3°C/min. For the first time, it was found that oxide inclusions of Al2O3 are dominant high-temperature hydrogen traps compared with pores and secondary phase precipitates resulted in rapid solidification of Al and its alloys. The correspondent high-temperature evolution rate peak was identified to be positioned at 600°C for high purity Al and shifted to 630°C for Al-Cr alloys. Amount of hydrogen trapped by dislocations increases in the alloys depending on Cr content. Microstructural hydrogen trapping behaviour in low-and intermediate temperature regions observed here was in coincidence with previous data obtained for RS materials using thermal desorption spectroscopy (TDS). The present results on hydrogen thermal desorption evolution indicate that the effect of oxide surface layers becomes remarkable in TDA measurements and show advantages in combinations of both desorption analysis methods to investigate hydrogen desorption kinetics in materials.

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A New Ar Desorption Peak in Thermal Desorption Spectroscopy Measurement of Sputtered HfO2 Accompanied by its Structural Phase Transformation

10.7567/ssdm.2013.ps-1-3 ◽

2013 ◽

Author(s):

T. Iwai ◽

T. Yajima ◽

T. Nishimura ◽

K. Nagashio ◽

A. Toriumi

Keyword(s):

Phase Transformation ◽

Thermal Desorption ◽

Structural Phase ◽

Thermal Desorption Spectroscopy ◽

Desorption Peak ◽

Structural Phase Transformation ◽

Spectroscopy Measurement

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The influence of Si and V on the kinetics of phase transformation and microstructure of rapidly solidified Al-Fe-Zr alloys

Journal of Mining and Metallurgy Section B Metallurgy ◽

10.2298/jmmb130214023k ◽

2013 ◽

Vol 49 (1) ◽

pp. 83-89 ◽

Cited By ~ 2

Author(s):

B. Karpe ◽

B. Kosec ◽

A. Nagode ◽

M. Bizjak

Keyword(s):

Electron Microscopy ◽

Electrical Resistivity ◽

Heating Rate ◽

Resistivity Measurement ◽

Electrical Resistivity Measurement ◽

Microstructural Development ◽

Precipitation Kinetics ◽

Rapidly Solidified ◽

Kinetics Of ◽

Zr Alloys

The influence of Si and V on the precipitation kinetics of the rapidly solidified (RS) Al-Fe-Zr alloys is presented. Precipitation kinetics and microstructural development of RS Al-Fe-Zr alloys with Si or V addition have been investigated by the combination of four point electrical resistance measurement, optical microscopy, transmition electron microscopy (TEM) and scanning electron microscopy (SEM). For verification of the electrical resistivity measurement results differential scanning calorimetry (DSC) and differential thermal analysis (DTA) was also applied. Rapidly solidified samples, in the form of thin ribbons, were prepared with the single roll melt spun technique. For determination of the distinctive temperatures at which microstructural transformations occur in-situ electrical resistivity measurement during heating of the ribbons with various constant heating rates has been used. It was found that microstructure decomposition depends on heating rate and shifts to higher temperatures with increasing heating rate. After heating above the distinctive transition temperatures, heating was stopped and microstructure of the samples examined by electron microscopy.

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611 Thermal desorption spectroscopy study on the hydrogen behavior of rapidly solidified aluminium

The Proceedings of Ibaraki District Conference ◽

10.1299/jsmeibaraki.2008.153 ◽

2008 ◽

Vol 2008 (0) ◽

pp. 153-154

Author(s):

I. Tashlykova-Bushkevich ◽

G. Itoh ◽

V. Shepelevich ◽

T. Shikagawa

Keyword(s):

Thermal Desorption ◽

Thermal Desorption Spectroscopy ◽

Spectroscopy Study ◽

Rapidly Solidified

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Investigation of the Pressure Dependent Hydrogen Solubility in a Martensitic Stainless Steel Using a Thermal Agile Tubular Autoclave and Thermal Desorption Spectroscopy

Metals ◽

10.3390/met11020231 ◽

2021 ◽

Vol 11 (2) ◽

pp. 231

Author(s):

Patrick Fayek ◽

Sebastian Esser ◽

Vanessa Quiroz ◽

Chong Dae Kim

Keyword(s):

Stainless Steel ◽

Thermal Desorption ◽

Hydrogen Diffusion ◽

Martensitic Stainless Steel ◽

Thermal Desorption Spectroscopy ◽

Hydrogen Uptake ◽

Hydrogen Solubility ◽

Automotive Components ◽

Set Up ◽

Service Application

Hydrogen is nowadays in focus as an energy carrier that is locally emission free. Especially in combination with fuel-cells, hydrogen offers the possibility of a CO2 neutral mobility, provided that the hydrogen is produced with renewable energy. Structural parts of automotive components are often made of steel, but unfortunately they may show degradation of the mechanical properties when in contact with hydrogen. Under certain service conditions, hydrogen uptake into the applied material can occur. To ensure a safe operation of automotive components, it is therefore necessary to investigate the time, temperature and pressure dependent hydrogen uptake of certain steels, e.g., to deduct suitable testing concepts that also consider a long term service application. To investigate the material dependent hydrogen uptake, a tubular autoclave was set-up. The underlying paper describes the set-up of this autoclave that can be pressurised up to 20 MPa at room temperature and can be heated up to a temperature of 250 °C, due to an externally applied heating sleeve. The second focus of the paper is the investigation of the pressure dependent hydrogen solubility of the martensitic stainless steel 1.4418. The autoclave offers a very fast insertion and exertion of samples and therefore has significant advantages compared to commonly larger autoclaves. Results of hydrogen charging experiments are presented, that were conducted on the Nickel-martensitic stainless steel 1.4418. Cylindrical samples 3 mm in diameter and 10 mm in length were hydrogen charged within the autoclave and subsequently measured using thermal desorption spectroscopy (TDS). The results show how hydrogen sorption curves can be effectively collected to investigate its dependence on time, temperature and hydrogen pressure, thus enabling, e.g., the deduction of hydrogen diffusion coefficients and hydrogen pre-charging concepts for material testing.

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