Materials (1 Viewer)

[balzac]

i need help understanding
- grain structures and what happens when u forge, treat or work them in any way
- ferrite, cementite, perlite, and any others... wat r they, and any info on them and how they can be affected

any info in this area would be helpful
thanks

 

[Denn]

0.15% CC Ferrite - Soft Malleable and ductile
Modification - Cold working or alloying, cannot be hardened by heat treatment
Examples - Nuts and bolts
0.35% CC - Ductile and tough, ferrite grains with approx. 30% of perlite.
Modification - By cold working or alloying, the steel cannot be hardened by heat treatment
Examples - Nuts and bolts
0.8% CC Perlite - Lamella structure of ferrite and cementite phases , the increased amount of cementite and its distribution throughout the microstructure gives a high UTS (Ultimate Tensile Strength) and a high hardness.
Modification - By heat treatment to harden the steel, alloying can also be used
Examples : brake cable wire
1.1 % Carbon Steel
Very Hard with low ductility , very brittle
Modification - Heat treatment to harden and temper the steel, alloying can be used aswell.
Examples : cutting tools

This is all related to breaking systems