2024年4月12日发(作者：)

n在奥氏体转变时的作用

## n's role in austenite transformation.

In the austenite transformation, n plays a crucial role

in determining the resulting microstructure and properties

of the material. The stacking fault energy (SFE) of a

material is a measure of the energy required to create a

stacking fault, which is a planar defect in the crystal

structure. The SFE is affected by the composition of the

material, and in particular, the presence of alloying

elements such as n. As the SFE increases, the austenite

transformation becomes more difficult to occur, and the

resulting microstructure will be finer and have a higher

strength.

The effect of n on the austenite transformation can be

explained by considering the role of stacking faults in the

transformation process. Stacking faults are formed when the

stacking sequence of the crystal lattice is disrupted. In

the case of austenite, the stacking sequence ,

while in ferrite, the stacking sequence The

formation of a stacking fault requires the breaking of

bonds between atoms, and the energy required to do this is

known as the stacking fault energy.

The presence of n in the material increases the SFE,

which makes it more difficult for stacking faults to form.

This, in turn, makes it more difficult for the austenite

transformation to occur, and the resulting microstructure

will be finer and have a higher strength.

## n在奥氏体转变中的作用。

在奥氏体转变中，n在决定材料的最终显微组织和性能方面起

着至关重要的作用。材料的堆垛层错能 (SFE) 是产生堆垛层错所需

的能量的度量，堆垛层错是晶体结构中的平面缺陷。SFE 受材料成

分的影响，特别是 n 等合金元素的存在。随着 SFE 的增加，奥氏

体转变将变得更难发生，并且所得的显微组织将更细并且具有更高

的强度。

可以通过考虑堆垛层错在转变过程中的作用来解释 n 对奥氏体

转变的影响。当晶格的堆垛顺序被打乱时，就会形成堆垛层错。在

奥氏体的情况下，堆垛顺序为 ，而在铁素体中，堆垛顺

序为 形成堆垛层错需要原子之间的键断裂，并且为此

所需的能量称为堆垛层错能。

材料中 n 的存在增加了 SFE，这使得堆垛层错更难形成。这反

过来又使得奥氏体转变更难发生，并且所得的显微组织将更细并且

具有更高的强度。