Wyniki wyszukiwania - BazTech

Ograniczanie wyników

2 1998

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: węglik tytanowy

Sortuj według:

Ogranicz wyniki do:

Structural investigations of Al-Fe-Ti alloys formed by mechanical alloying under various conditions.

Krasnowski M., Matyja H.

Inżynieria Materiałowa

1998

R. XIX, nr 4

1163-1166

There is increasing interest in the synthesis of aluminium-based alloys by mechanical alloying (MA). These materials possess a high specific strength and in high temperature applications, exhibit attractive mechanical properties. The aim of this work was to study the structural and phase transformations that take place during mechanical alloying of the ternary Al50Fe25Ti25 alloy in a high energy planetary ball mill. Two experiments were performed: one with an addition of ethanol and the other without any additional agent. The nanocrystalline composite powder, consisting of titanium carbide distributed in the Fe(Al) matrix was the final product of the process performed with the addition of ethanol. After milling without any agent an amorphous phase was observed to form. When this phase was then subjected to heating in a calorimeter the ternary phase tau2(Al2FeTi) and Fe(Al, Ti) solid solution appeared.

Parameters of vacuum titanizing process as the factors changing growth kinetics of diffusion layers on steel surface.

Kasprzycka E.

Inżynieria Materiałowa

1998

R. XIX, nr 4

1015-1018

Layers produced on carbon steel (0.90%C) during vacuum titanizing have been investigated. In particular, the influence of the pressure in furnance chamber is discussed. Titanium carbide layers have been obtained. Titanizing conducted at low pressure with a static rather than a dynamic vacuum during the holding period was found to be the most effective for maximizing the rate of growth of diffusion layers. It has been shown that the growth of titanized layers is controlled by the diffusion in the steel.