The mutual effect of iron and manganese on microstructure and mechanical properties of aluminium –silicon alloy

Дарвиши, Алиреза; Maleki, Ali; Atabaki, M. Mazar; Zargami, Mohammad

doi:10.30544/383

Cited by 14 publications

(16 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The minimum UTS (159 ± 2.5 MPa) and elongation (2.4%) values reached were obtained in A3 alloy, while the maximum values were obtained for the A1 alloy, reaching an elongation up to 6.4% and UTS of 174 ± 2.5 MPa. The highest UTS obtained in the A1 alloy is slightly lower than the results reported by Darvishi et al 24 . That difference could be attributed to the refinement in their reported microstructure, which was modified with P and Sr additives.…”

Section: Evaluation Of the Mechanical Propertiescontrasting

confidence: 53%

Study of the Al-Si-X system by different cooling rates and heat treatment

et al. 2012

View full text Add to dashboard Cite

The solidification behavior of the Al-12.6% Si (A1), the hypereutectic Al-20%Si (A2) and the Al-20%Si-1.5% Fe-0.5%Mn (A3) (in wt. (%)) alloys, at different cooling rates is reported and discussed. The cooling rates ranged between 0.93 °C/s and 190 °C/s when cast in sand and copper wedge-shaped molds, respectively. A spheroidization heat treatment was carried out to the alloys in the as-cast condition at 540 °C for 11 hours and quench in water with a subsequent heat treatment at 170 °C for 5 hours with the purpose of improving the mechanical properties. The samples were characterized by optical microscopy, scanning electron microscopy and mechanically by tensile test, in order to evaluate the response of the heat treatment on the different starting microstructures and mechanical properties. It was found that alloys cooled at rates greater than 10.8 °C/s had a smaller particle size and better distribution, also showed a greater response to spheroidization heat treatment of all silicon (Si) phases. The spheroidization heat treatment caused an increase in the ultimate tensile stress (UTS) and elongation when compared with the alloys in the as-cast condition. The highest UTS value of 174 MPa was obtained for the (A1) alloy.

show abstract

Section: Evaluation Of the Mechanical Propertiescontrasting

confidence: 53%

Study of the Al-Si-X system by different cooling rates and heat treatment

et al. 2012

View full text Add to dashboard Cite

show abstract

“…For the Al-20Si-1.5 Fe-0.7Mn alloy with high Si and Fe contents the elongation to fracture and UTS decreased to 2.2% and 182 ± 2.5 MPa, respectively. The UTS obtained in the three alloys are similar than the results reported by Darvishi et al 21 and higher than those Al-Si alloys conventionally solidified.…”

Section: Mechanical Propertiessupporting

confidence: 51%

Effect of Rapid Solidification and Addition of Cu3P on the Mechanical Properties of Hypereutectic Al-Si Alloys

et al. 2016

View full text Add to dashboard Cite

The combined processes; rapid solidification, addition of Cu 3 P compound and heat treatments to improve the mechanical properties of the hypereutectic Al-13Si, Al-20Si and Al-20Si-1.5Fe-0.7Mn alloys (in wt. %) was studied. Optical microscopy and scanning electron microscopy were used to characterize the microstructures. The mechanical properties were evaluated by tensile tests. It was found that the cooling rate (20-50°C/s) used to solidify the alloys plus the addition of Cu3P compound favored the formation of fine primary Si and the transformation of the Al/Si eutectic from acicular to semi-transformed morphology. The spheroidization of the Al/Si eutectic after heat treatment caused an increase in the elongation (%) compared with the as-cast alloys. Al-13Si alloy showed the highest UTS and elongation (%) values, reaching values up to 215 MPa and 9.6%, respectively. On the other hand, the Al-20Si-1.5Fe-0.7Mn alloy showed the lowest UTS (180MPa) and elongation (3.4%) values. The formation of the Fe-intermetallic compounds caused a negative effect on the mechanical properties of the Al-20Si-1.5Fe-0.7Mn alloy.

show abstract

“…In the alloy with a content of 0.5 wt.% V (Fig. 2a) occur massive skeleton Fe-phases (Al 15 (FeMn) 3 Si 2 ) and the relative long needles Al 5 FeSi (local more than 50 µm).…”

Section: Resultsmentioning

confidence: 99%

“…In case of larger amount, such as 0.3 -0.5 wt.% of Fe, it causes, first of all, formation of Fe-intermetallic phases (e.g. Al 5 FeSi). The size and density of Fe-based intermetallic phases are increased with the increase of % of Fe, also the dimensions of the defects and porosity of casting.…”

Section: Introductionmentioning

confidence: 99%

“…Mn is widely used as an alloying addition to neutralize the effect of Fe and modify the needle-like Al 5 FeSi phase to less harmful morphologies (script-like, Chinese script) -Al 15 Cr can make formation negative so called "sludge" phases in alloy with high amount of iron that cannot be removed from final alloy. Application of vanadium in Al-Si alloys has positive effect for mechanical properties, increases the tensile strength, ductility and hardness.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Structural analysis of iron based intermetallic phases in secondary AlSi6Cu4 cast alloy

Švecová

Tillová

Kuchariková

2017

Production Engineering Archives

View full text Add to dashboard Cite

The use of secondary aluminum alloys is increasing because it contributes to the decrease of production costs. However, these alloys contain bigger amount of iron. Iron has a negative effect and therefore its elimination is necessary in order to add some elements, which are also called correctors of iron. The most frequently used corrector is manganese. Another quite often used correctors are chromium, potassium, magnesium, vanadium. In the following work, vanadium is used as a corrector of iron phases. The application of vanadium in aluminum alloys has a positive impact on their mechanical properties, increases the tensile strength, ductility and hardness. As experimental material AlSi6Cu4 alloy was used. It was alloyed by master alloy AlFe10. After adding to the master alloy the iron content, the critical value in the alloy exceeded. Vanadium was added to AlSi6Cu4 alloy in different quantities. The image analysis (software NIS-Elements) was used for quantifying the amount of iron based intermetallic phases and determination of average values.Keywords iron based intermetallic phases vanadium aluminium alloy

show abstract

The mutual effect of iron and manganese on microstructure and mechanical properties of aluminium –silicon alloy

Cited by 14 publications

References 6 publications

Study of the Al-Si-X system by different cooling rates and heat treatment

Study of the Al-Si-X system by different cooling rates and heat treatment

Effect of Rapid Solidification and Addition of Cu3P on the Mechanical Properties of Hypereutectic Al-Si Alloys

Structural analysis of iron based intermetallic phases in secondary AlSi6Cu4 cast alloy

Contact Info

Product

Resources

About