Tensile strength of AK7 alloy after treatment by exothermic mixtures
Description
The paper presents the influence of treatment by chemical compounds giving exothermic effect on the tensile strength of AK7 alloy. The research was carried out on 1100 g of the alloy in classical mould. The chemical mixture was composed of Na2B4O7, NaNO3 and Cr2O3 + AlNi. The studies were conducted following a mathematical experiment plan. The action of Borax was free from interference whereas the two residual constituents were mass-dependence. Excess NaNO3 was caused by the reduction of the value of the tensile strength. Cr2O3 + AlNi strengthened the influence of NaNO3. It was found that the blending of Na2B4O7 and NaNO3 on weight ratio 1,5 to 1 and of NaNO3 and Cr2O3 + AlNi on weight ratio 1 to 3 improved the tensile strength of the AK7 alloy after treatment. (author)
Additional details
Additional titles
- Original title (Polish)
- Wytrzymalosc na rozciaganie stopu AK7 po obrobce skladnikami stopowymi
- Augmented title (English)
- Borax as an mixture component
Publishing Information
- Journal Title
- Archiwum Nauki o Materialach
- Journal Volume
- 23
- Journal Issue
- 1
- Journal Page Range
- p. 83-95
- ISSN
- 0138-032X
INIS
- Country of Publication
- Poland
- Country of Input or Organization
- Poland
- INIS RN
- 35078129
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- ALUMINIUM ALLOYS; BORAX; CHEMICAL COMPOSITION; CHEMICAL REACTIONS; CHROMIUM OXIDES; FABRICATION; NICKEL ADDITIONS; SILICON ALLOYS; SODIUM NITRATES; TENSILE PROPERTIES
- Descriptors DEC
- ALKALI METAL COMPOUNDS; ALLOYS; BORATES; BORON COMPOUNDS; CHALCOGENIDES; CHROMIUM COMPOUNDS; MECHANICAL PROPERTIES; NICKEL ALLOYS; NITRATES; NITROGEN COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; SODIUM COMPOUNDS; TRANSITION ELEMENT ALLOYS; TRANSITION ELEMENT COMPOUNDS
Optional Information
- Notes
- 11 refs, 4 figs, 1 tab.