Metallic Alloys Lecture Notes

Vocabulary flashcards based on the lecture notes for MECE 4250 - Advanced Materials Engineering covering metallic alloys.

Low Carbon Steels

Produced in greatest quantity, unresponsive to heat treatments, microstructure ferrite & pearlite, soft & weak but ductile & tough.

Medium Carbon Steels

Subject to heat treatments, microstructure: tempered martensite, lower ductility & toughness due to rapid heat treatment.

High Carbon Steels

Strongest & hardest but least ductile, wear resistant, holds sharp cutting edge.

Hardenability

Relative ability of a steel to be hardened in depth by quenching.

Jominy End-Quench Test

A standard procedure to determine the hardenability of steel by quenching one end of a cylindrical specimen.

Stainless Steels

Highly resistant to corrosion; alloyed with Cr (at least 11 wt%) and may contain Ni and Mo.

Aluminum Based Alloys

Low density, high electrical and thermal conductivity, used in various applications including aircraft structures.

Magnesium Based Alloys

Low density, soft and not corrosion resistant in marine environments, used when lightweight is critical.

Precipitation Hardening

Formation of small uniformly dispersed second phase particles within the original matrix, enhancing strength.