Ireneusz Telejko, Henryk Adrian, Bogdan Guzik


Over-all mechanical properties of alloys are extremely low at the last stage of solidification where alloy exists at brittle temperature range (BTR). When the solidification process is completed a sudden and marked change in strength and ductility of metal is observed. It means that as long as liquid phase is present, metal will fail in a brittle manner. There are known different theories of brittleness of alloys in existence of liquid phase. The idea involved by authors of the paper is as follows: three major factors caused by presence of liquid may be taken into account:

       – decreasing the energy needed for crack nucleation;

        – increasing atomic diffusional flux out of the crack tip;

       – creating a path for abnormally quick diffusion of atoms from the crack tip.


Ключові слова

high temperature brittleness, hot tearing, shrinkage brittleness, mushy state.

Повний текст:

PDF (English)

Адреса редакції журналу:
Редакція журналу «ВД», Національний університет "Запорізька політехніка", 
вул. Жуковського, 64, м. Запоріжжя, 69063, Україна. 
Телефон: 0 (61) 228-16-27, 769-82-69
E-mail: vd@zntu.edu.ua

При повному або частковому використаннi матерiалiв посилання на журнал є обов’язковим.