Quenching- Tempering Effects On Fracture Properties In Carburized Low Carbon Steel
Quenching and tempering process are two common processes that are used in the industrial. Quenching is the process where the steel is rapidly cooled after carburizing by using quenching medium such as oil while tempering is the process where the steel is heated at certain temperature between 400o...
| Summary: | Quenching and tempering process are two common processes that are used in
the industrial. Quenching is the process where the steel is rapidly cooled after
carburizing by using quenching medium such as oil while tempering is the process
where the steel is heated at certain temperature between 400oC to 600oC. In this
research, 20 specimens of low carbon steel specimens with dimension of 100mm x
19mm x 10mm are used for heat treatment process such as carburizing, quenching,
tempering and normalizing. Then the specimens were fracture by using fracture
toughness test as per ASTM E399. The effect of this heat treatment process on the
fracture properties were analyzed by doing statistical analysis which is hypothesis
test. As for data comparison, 4 set of specimens were treated with different heat
treatment process. The results from this research showed that the fracture toughness
become higher when the specimen undergo quenching and tempering process. This is
due to the change of microstructure in the material which it increases the ductility
and strength of the specimen therefore making it tougher and durable. Furthermore,
the carburizing process diffused more carbon on the specimens which resulted in a
higher wear resistance and hardness surface. As a conclusion, this research gives
important information and helps the industry to increase the production of steel with
higher strength and longer life span. |
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