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1

Some Technological Features of Welding While Building of the Ammonia Tanks

Beloev M., Lolov N.

Biuletyn Instytutu Spawalnictwa w Gliwicach

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2016

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Vol. 60, No. 5

104--110

PL

Omówiono czynniki związane z naprężeniowym pękaniem korozyjnym podczas eksploatacji zbiorników do przechowywania amoniaku. Przedstawiono szczegóły technologii spawania mające na celu zapewnienie maksymalnej trwałości tych zbiorników, metody zmniejszenia naprężeń spawalniczych w ich konstrukcji i nieniszczące metody pomiaru naprężeń własnych po odprężaniu konstrukcji.

EN

The article discusses factors connected with the stress corrosion cracking of ammonia storage tanks and presents the details of a welding technology ensuring the obtainment of the maximum service life of these tanks.

2

Structure, mechanical properties and corrosion resistance of AlMg5 and AlMg1Si1 alloys

Kciuk M., Tkaczyk S.

Journal of Achievements in Materials and Manufacturing Engineering

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2007

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Vol. 21, nr 1

39-42

EN

Purpose: The main task of this work was to define the optimum heat treatment parameters so as to received the alloys resistant for stress corrosion cracking, within the limits of the corrosion factor, i.e. artificial sea water. Design/methodology/approach: The mechanical properties were evaluated by tensile tests. The corrosion tests (in corrosion environment and inert-glycerol) were carried out on the device, making possibility extension of the samples with constant speed until break. Another investigations: SEM, light microscopy and TEM. Findings: The researches included structural analyse, mechanical and corrosion investigations, which allow to define the optimum parameters (quenching at 560 degrees centigrade temperature, in water, artificial ageing at temperature 160 degrees centigrade/12 h) so as to received the alloys resistant for stress corrosion cracking. Research/limitations/implications: Conducted investigations layout the areas of later researches, a specially in the direction of the possible, next optimization tests of their structure, e.g. in the range of raising resistance on corrosion cracking in chosen media. Practical implications: The range of possible uses the regard also increases from this, as materials on working constructions in the investigated aggressive environment. Originality/value: Contributes to research on corrosion protection for aluminium and its alloys.

3

The finite element method as evaluation of the susceptibility to stress corrosion cracking of plate heat exchangers.

Pałka K., Weroński A.

Inżynieria Materiałowa

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2001

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R. XXII, nr 5

702-703

EN

In this work the finite element method (FEM) was used to evaluate the susceptibility to stress corrosion cracking of stream plates of heat exchangers. The expression process was simulated by FEM, as a result the distributions of internal stresses was obtained. Equivalent stresses in deep expression areas of plates had a value of ultimate tensile strength and mean normal stresses in tensile area had a value of 100 MPa, which might involve stress corrosion cracking.

PL

W pracy wykorzystano analizę metodą MES do oceny podatności do korozji naprężeniowej płyt wymienników ciepła. Istniejące w płytach naprężenia zredukowane osiągają wartość zbliżoną do wytrzymałości na rozciąganie, natomiast naprężenia średnie w rozciąganej warstwie materiału osiągają wartość ponad 100 MPa i przyczyniają się istotnie do inicjacji procesu korozji naprężeniowej.

4

Pękanie korozyjne elementów turbin parowych.

Melechow R., Tubielewicz K., Krucan G.

Mechanik

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1998

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R. LXXI, nr 10

564-566

PL

Przeanalizowano rolę czynników determinujących skłonność wirników turbin parowych do pękania korozyjnego (PK). Określono odporność stali wirnikowych na PK w środowisku geotermicznym zawierającym H2S i CO2. Podano wnioski o sposobach zwalczania PK stali przeznaczonych na wirniki turbin parowych.

EN

The role of factors that cause SCC of steam turbine rotors was analysed. The SCC susceptibility of rotor steels in geothermal power environment saturated by H2S and CO2 was determined. The conclusion was made about the state of SCC of these materials, and main investigation trends which are necessery to solve this problem have been listed.

5

Hydrogen effects on stress corrosion cracking of some aluminium alloys.

Zieliński A.

Inżynieria Materiałowa

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1998

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R. XIX, nr 3

433-438

EN

Results of slow strain rate testing of the Al-Zn-Mg and Al-Zn-Cu-Mg aluminium alloys in NaCl solutions are presented. The evidence of hydrogen contribution to stress corrosion cracking is demonstrated by the effects of addition of arsenic trioxide, post exposure storage and cathodic polarisation on susceptibility to stress corrosion cracking. The mechanism of hydrogen-assisted stress corrosion cracking that includes the concept of critical hydrogen concentration dependent on grain boundary microstructure is discussed.