钼元素对核电焊条CHE608HR1熔敷金属力学性能和组织的影响研究

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中图分类号：TG456.9

Abstract：Byadjusting the amount of molybdenum added，the influence of molybdenum on the mechanical properties of the weld metal and the on the change of structure were studied. It was found that increasing the amount of molybdenum can further improve the hardenability，improve the tempering stability，refine grains，and increase the tensile strength of the weld metal，and thestructure ismainly bainiteandferite，but whenthecontent of molybden in the weld metal exceeds 0.5% ，it will promote the generation of M/A components，which is one of the main factors that cause the decrease of impactness.

Key words： molybdenum； deposited metal； organize; heat treatment； mechanical properties

0 前言

合金钢焊材主要用于核级主设备容器壳体的焊接，对于焊缝强度和低温冲击韧性要求都很高。（剩余2398字）