AUSTEMPERING HEAT TREATMENT STUDY OF CAST DUCTILE IRON: ANALYSIS OF MECHANICAL AND MICROSTRUCTURAL PROPERTIES, ACCORDING TO THE A897M STANDARD SPECIFICATIONS FOR AUSTEMPERED DUCTILE IRON CASTINGS
Journal Title: Periódico Tchê Química - Year 2017, Vol 14, Issue 27
Abstract
The objective of this work was to develop heat treatment parameters of an austempered cast iron alloy ASTM 897 / A 897M - 1400/1100/1, aiming at the production of a truck spring support. The austempered nodular cast iron, known by the acronym ADI - Austempered Ductile Iron - is a class of nodular cast iron that, after austempered thermal treatment, increases significantly its mechanical properties and tenacity (Machado, 2007). Mechanical and metallographic tests demonstrated the great influence that the level of microshrinkage has on the elongation and mechanical resistance of the material. Generally, tensile tests demonstrate high elongation due to minimal presence of microshrinkage and segregations in the metallic matrix of the material, as well as to the presence of austenite with high carbon retained in the ADI matrix. Analyzes were performed to determine if the mechanical properties required by ASTM 897 / A897M were achieved. Within this standard, four degrees can be obtained. The degree of interest in this study was 1400/1100/1, which is the grade requested by the company, so that the truck spring support can be put into service. Tensile, Charpy and optical microscopy tests were carried out.
Authors and Affiliations
Alessandra Regina Machado SCHIFINO
Keywords
Related Articles
- EP ID EP252168
- DOI -
- Views 295
- Downloads 0
MATHEMATIC SIMULATION OF ENERGY-EFFICIENT POWER SUPPLY SOURCES FOR MECHATRONIC MODULES OF PROMISING MOBILE OBJECTS
On the basis of mathematics simulation, the problem of optimizing the energy storage and the mass-dimensional parameters of the mechatronic modules of aviation equipment is solved by synthesizing the structure and analyz...
RATIONALE FOR WATER SOIL WASHING TECHNOLOGIES BY GROWTH REGULATION
When irrigation of land in the arid zone, one of the mandatory elements for maintaining the water-salt balance is soil washing. At present, washing standards are calculated and recommended for different soils. However, t...
ACTIVITY LARVICIDE OF THE ESSENTIAL OIL SYZYGIUM AROMATICUM (CARNIVAL-OF- INDIA) IN FRONT OF THE MOSQUITO AEDES AEGYPTI (LINNAEUS, 1762)
Dengue, zika virus and chicungunya are diseases transmitted by the bite of the female mosquito Aedes aegypti Linn. Because of this, these diseases pose a public health problem, especially in tropical countries. To date,...
MOLECULAR ABSORPTION SPECTROSCOPY IN THE UV-VIS REGION FOR THE QUINOLINE-N-OXIDE, NICOTINAMIDE-N-OXIDE AND 2,2-DITHIOBISPYRIDINE-N-OXIDE LIGANDS
Required The purpose of this study was to analyze and quantify spectral parameters, the absorption bands, specifically in the uv-visible region of some N-oxide ligands. From the spectra, the area under the absorption ban...
MORPHOLOGY AND KINETICS OF PETROLEUM WAX DISSOLUTION IN HYDROCARBON SYSTEMS
This paper studies the effect of solvent chemical nature on the kinetic parameters of dissolution and the morphology of the petroleum waxes. The kinetics of the petroleum wax dissolution in gas condensate and the hexane-...