The influence of defects on the quality of the wrought aluminum alloys

Authors

  • N. E. Kalinina Кафедра технологий производства, Днепропетровский национальный университет имени Олеся Гончара, пр. Гагарина, 72, 49010, Днепропетровск, Украина, Ukraine
  • Z. V. Vilishchuk Кафедра технологий производства, Днепропетровский национальный университет имени Олеся Гончара, пр. Гагарина, 72, 49010, Днепропетровск, Украина, Ukraine
  • T. V. Nosova Кафедра технологий производства, Днепропетровский национальный университет имени Олеся Гончара, пр. Гагарина, 72, 49010, Днепропетровск, Украина, Ukraine
  • S. I. Mamchur Кафедра технологий производства, Днепропетровский национальный университет имени Олеся Гончара, пр. Гагарина, 72, 49010, Днепропетровск, Украина, Ukraine

Keywords:

internal defects, properties, refining, modification, wrought aluminium alloys

Abstract

Objective. Study  of  the  effect  of  internal  defects  on  the  properties  of  the  deformed  billets  of  aluminum  alloys. Material. As the material for the present study were selected wrought aluminum alloys B95 system Al–Zn–Mg–Cu and 01570 of the system  Al–Mg–Sc. Methods. Investigated  internal  defects  arising  during  deformation  in  the  semis,  grain  structure,  methods  of improvement of billets and mechanical properties of aluminium alloys after processing, refining additives and a complex modifier based on silicon carbide. Results. Conducted complex research has shown the active influence of the method of obtaining blanks of semi-finished products on the occurrence of internal defects. In this case, the least amount of internal defects detected during electro refining and modification of nanodispersed refractory particles. Received a more dispersed structure of alloys 01570 B95 and that leads  to  increasing  of  complex  of  mechanical  and  technological  properties. Scientific  novelty. For  aluminum  alloys,  the  relation between  the  processing  of  the  melt  (refining,  modification)  and  the  formation  of  internal  defects  in  workpieces. Practical significance. Understanding of the causes of the formation of internal defects and methods of their elimination, will allow you to control the structure and the complex technological and mechanical properties, enhancing the quality and yield of rolled products.

Author Biographies

N. E. Kalinina, Кафедра технологий производства, Днепропетровский национальный университет имени Олеся Гончара, пр. Гагарина, 72, 49010, Днепропетровск, Украина

Dr. Sc. (Tech.), Prof.

Z. V. Vilishchuk, Кафедра технологий производства, Днепропетровский национальный университет имени Олеся Гончара, пр. Гагарина, 72, 49010, Днепропетровск, Украина

lead engineer

T. V. Nosova, Кафедра технологий производства, Днепропетровский национальный университет имени Олеся Гончара, пр. Гагарина, 72, 49010, Днепропетровск, Украина

Cand. Sc. (Tech.), Doc.

S. I. Mamchur, Кафедра технологий производства, Днепропетровский национальный университет имени Олеся Гончара, пр. Гагарина, 72, 49010, Днепропетровск, Украина

Cand. Sc. (Tech.), Doc.

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Published

2016-03-22

Issue

Section

Proceedings in memory of Starodubov