Following annealing, the microstructure consisting of submicron scale equiaxed ferritic grains and dispersive cementite particles became more homogeneous.

• 形变组织经过保温后，亚微米级别的等轴铁素体晶粒和渗碳体颗粒弥散分布的复相组织的均匀性程度有所提高。