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首页> 外文会议>TMS annual meeting exhibition;International symposium on high-temperature metallurgical processing >Effect of Microalloy Elements V and Mg on Organization at High Heat Input Welding Shipbuilding Structure Steel
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Effect of Microalloy Elements V and Mg on Organization at High Heat Input Welding Shipbuilding Structure Steel

机译：微合金元素V和Mg对高热输入焊接造船结构钢组织的影响

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摘要

An industrial test on 2101 converter-LF-CC production line on high heat input welding shipbuilding structure steel DH36 has been taken in a factory in north China, the effect of adding microalloy elements V and Mg on casting billet microstructure has been researched. It was found that when the composition of V was between 0.03 and 0.05% and the composition of Mg was between 0.002 and 0.005%, a large number of acicular ferrite precipitate in austenitic crystal in as-cast structure and cross into a net structure. The inclusions size which induced intra-granular ferrite are mainly less than 4 urn, especially those between 2 and 3 μrn account for 50.80%, in these inclusions the composite inclusions mixed with Mg accounted for more than 60%.
机译：在华北某工厂对2101转炉-LF-CC生产线进行了高热输入焊接造船结构钢DH36的工业试验，研究了添加微合金元素V和Mg对铸坯组织的影响。发现当V的组成在0.03至0.05％之间并且Mg的组成在0.002至0.005％之间时，大量的针状铁素体在铸态结构中在奥氏体晶体中沉淀并交叉成网状结构。诱发晶内铁素体的夹杂物尺寸主要小于4 urn，特别是2〜3μm的夹杂物占50.80％，其中夹杂有Mg的复合夹杂物占60％以上。

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