Temat: high strength steel - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Segregation behaviour of third generation advanced high-strength Mn-Al steels
Autorzy:: Grajcar, A.
Powiązania:: https://bibliotekanauki.pl/articles/382818.pdf
Data publikacji:: 2012
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: makrosegregacja
mikrosegregacja
AHSS
stal typu TRIP
EDS
mikrostruktura
odkształcenie wysokotemperaturowe
mikrododatek stopowy
macrosegregation
microsegregation
Advanced High Strength Steel (AHSS)
TRIP steel
microstructure
hot deformation
microalloying
Opis:: The paper addresses the macro- and microsegregation of alloying elements in the new-developed Mn-Al TRIP steels, which belong to the third generation of advanced high-strength steels (AHSS) used in the automotive industry. The segregation behaviour both in the as-cast state and after hot forging was assessed in the macro scale by OES and by EDS measurements in different structural constituents. The structural investigations were carried out using light and scanning electron microscopy. A special attention was paid to the effect of Nb microaddition on the structure and the segregation of alloying elements. The tendency of Mn and Al to macrosegregation was found. It is difficult to remove in Nb-free steels. Microsegregation of Mn and Al between austenite and ferritic structural constituents can be removed.
Źródło:: Archives of Foundry Engineering; 2012, 12, 2; 123-128
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Changes in Impact Strength and Abrasive Wear Resistance of Cast High Manganese Steel Due to the Formation of Primary Titanium Carbides
Autorzy:: Tęcza, G.
Zapała, R.
Powiązania:: https://bibliotekanauki.pl/articles/383189.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: high-manganese steel
microstructure
primary carbides
microhardness
impact strength
abrasion
stal wysokomanganowa
mikrostruktura
węgliki
mikrotwardość
siła uderzenia
Opis:: Cast high-manganese Hadfield steel is commonly used for machine components operating under dynamic load conditions. Their high fracture toughness and abrasive wear resistance is the result of an austenitic structure, which - while being ductile - at the same time tends to surface harden under the effect of cold work. Absence of dynamic loads (e.g. in the case of sand abrasion) causes rapid and premature wear of parts. In order to improve the abrasive wear resistance of cast high-manganese steel for operation under the conditions free from dynamic loads, primary titanium carbides are produced in this cast steel during melting process to obtain in castings, after melt solidification, the microstructure consisting of an austenitic matrix and primary carbides uniformly distributed therein. After heat treatment, the microhardness of the austenitic matrix of such cast steel is up to 580 μHV20 and the resulting carbides may reach even 4000 μHV20. The impact strength of this cast steel varies from 57 to 129 and it decreases with titanium content. Compared to common cast Hadfield steel, the abrasive wear resistance determined in Miller test is at least twice as high for the 0.4% Ti alloy and continues growing with titanium content.
Źródło:: Archives of Foundry Engineering; 2018, 18, 1; 119-122
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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