尤其是调质钢焊接接头的软化区，其性能值和宽度严重影响接头的承载能力。
Especially, the softened zone's performance indexes and width affect the load-supporting capability of the quenched and tempered steel's welded joints seriously.
焊接接头显微硬度随热输入的增大而减小，均高于母材，未出现明显的软化区。
With the heat input of laser welding increases, the hardness of HAZ decreases, but it is higher than that of the base metal, indicating no softened zone after laser welding.
矿柱弹性区的应力水平及软化区的应力分布不受矿柱宽度的影响，前者与矿柱的轴向应变有关。
The stress level in elastic zone and the stress distribution in strain-softening zone are not affected by the pillar thickness. The former is related to the axial strain of the pillar.
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