Difference Between Pearlite and Bainite

Thekey differencebetween pearlite and bainite is that thepearlite contains alternating layers offerrite和水泥岩，而贝氏岩具有板状微观结构。

The names pearlite and bainite refer to two different microstructures ofsteel. These structures form when we make changes to austenite by changing the temperature accordingly. Let us discuss the further differences between pearlite and bainite.

CONTENTS

1.Overview and Key Difference
2.What is Pearlite
3.What is Bainite
4.Side by Side Comparison – Pearlite vs Bainite in Tabular Form
5.概括

What is Pearlite?

Pearlite is a type of microstructure in steel having a two-layered phase of alternating layers of ferrite and cementite. Ferrite and cementite are two differentallotropesof铁. This microstructure occurs in steel and cast iron. When we cool the steel slowly, this microstructure forms via a eutectoid reaction (a three-phase reaction by which, on cooling, a solid transform into two other solid phases at the same time). This is because, during the slow cooling, austenite cools below its eutectoid temperature (727 °C).

带有珠光体微结构的钢具有铁和碳的共晶组成。因此，可以轻松地将具有珠光体或近石脂微观结构的钢插入细线中。大多数情况下，这些电线被捆绑在一起，以便卖方可以将它们作为钢琴和绳索出售，用于悬架桥。

What is Bainite?

Bainite is a type of microstructure in steel that has a plate-like structure. This structure forms when the steel is at around 125–550 °C. Furthermore, it also forms when austenite cools until it passes a temperature at which austenite structure is no longer stable (thermodynamically unstable) when compared with ferrite or cementite.

The bainite structure mainly consists of cementite and ferrite, and this ferrite is rich with dislocations. Therefore, this large density of dislocations in ferrite makes it hard.

What is the Difference Between Pearlite and Bainite?

Pearlite is a type of microstructure in steel that has a two-layered phase of alternating layers of ferrite and cementite. It forms when austenite cools below its eutectoid temperature (727 °C). Moreover, this structure occurs in steel and cast iron. On the other hand, Bainite is a type of microstructure in steel that has a plate-like structure. The structure is the main difference between pearlite and bainite. Furthermore, bainite forms when austenite cools: until it passes a temperature at which austenite structure is no longer stable (thermodynamically unstable). In addition, this structure also occurs in steel.

概括– Pearlite vs Bainite

Pearlite and Bainite are two main microstructures in steel. The difference between pearlite and bainite is that the pearlite contains alternating layers of ferrite and cementite whereas the bainite has a plate-like microstructure.

Reference:

1. “Pearlite.” Wikipedia, Wikimedia Foundation, 5 July 2018.Available here
2. “Bainite.” Wikipedia, Wikimedia Foundation, 3 July 2018.Available here

Image Courtesy:

1.’Pearlite’By Michelshock – McGill University, (Public Domain) viaCommons Wikimedia
2.’Dqsk-steel-bainitic-weld-tem-image’By J. Horton. (Public Domain) viaCommons Wikimedia