Book ChapterDOI
Investigations on Pb-Free 6000 Series Aluminum Alloy for Machining Applications
Saikat Adhikari,Anirban Giri,V. Siva Raman,Pramod Koparde,Sachin Gupta,L. Vijayaraghavan,S. Sankaran +6 more
- pp 285-292
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TLDR
In this paper, a Pb-free machining grade 6xxx aluminum alloy based on Sn was developed and its machinability evaluated, which was found to be superior to that of non-machining grade AA6061-T6 and AA6082-T 6 alloy.Abstract:
Pb-based alloys such as AA6262, AA2011 and more recently AA6026 are used as free-machining aluminum alloys for automotive and electronic applications However, in order to comply with Automotive End of Life Vehicles (ELV) and Restriction of Hazardous Substances (RoHS) directives, Pb-based alloys slowly need to be phased out A Pb-free machining grade 6xxx aluminum alloy based on Sn was developed and its machinability evaluated Microstructure analysis of the Al–Mg–Si–Sn–Cu alloy revealed the presence of (98 wt%) Sn–Mg2Sn eutectic phases, which have a low melting point of ~203 °C, and are responsible for providing good machinability Homogenized billets of the alloy were extruded and heat treated to T6 temper Yield strength and ultimate tensile strength of the Pb-free alloy were comparable to those of the conventionally used Pb-based AA6262-T6 alloy Machinability studies of the alloy were conducted by evaluating the effect of cutting speed, feed rate and depth of cut on surface roughness, chip size and form of chip produced during the turning operation The machinability of the Sn containing alloy was found to be superior to that of non-machining grade 6xxx alloys AA6061-T6 and AA6082-T6 and comparable to that of Pb-based free-machining alloy AA6262-T6read more
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Journal ArticleDOI
Experimental analysis and optimization on machining of coated carbon fiber and nanoclay reinforced aluminum hybrid composites
Journal ArticleDOI
Mechanism of the Mg3Bi2 Phase Formation in Pb-Free Aluminum 6xxx Alloy with Bismuth Addition
TL;DR: In this paper, a free-cutting aluminum alloy AA6026 with 1.1 wt.% bismuth addition was fabricated by different melt preparation methods in order to investigate whether the melt preparation route affects the solidification sequence and thus has an influence on the machinability of the alloy.
References
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Book ChapterDOI
Machining and Machinability of Aluminum Alloys
TL;DR: In this article, the machinability of aluminum alloys is defined by various criteria, such as tool life, surface finish, chip evacuation, material removal rate and machine-tool power.
Journal ArticleDOI
Free-Cutting Aluminium Alloys with Tin as Substitution for Lead
TL;DR: In this article, the Institute of Nonferrous Metallurgy at the University of Leoben has developed a lead-free aluminium alloy with good free-cutting machinability without a cut back in productivity and performance in end uses and applications.
Book ChapterDOI
Properties of Free-Machining Aluminum Alloys at Elevated Temperatures
TL;DR: In this paper, free-machining alloys of Al-Cu and Al-Mg-Si systems containing Pb, Bi and Sn additions (AA2011, AA2111B, AA6262, and AA6023) were subjected to Charpy U notch impact test at the temperatures ranging from 20 to 350°C.
Book ChapterDOI
Influence of the Chemical Composition on the Structure and Properties of Lead-Free Machinable AA6023 (Al-Mg-Si-Sn-Bi) Alloy
TL;DR: In this paper, the structure and properties of extruded rods of a new machinable lead-free aluminum AA6023 (Al-Mg-Si-Sn-Bi) alloy having different levels of Mg content were characterized.