An investigation of weld solidification in Cr‐Ni‐Fe‐Mo alloys
An investigation of weld solidification in Cr‐Ni‐Fe‐Mo alloys
复制标题
Cr-Ni-Fe-Mo合金焊缝凝固研究
DOI：
10.1080/09507119209548233
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发表时间：
1992
影响因子：
--
通讯作者：
T. Ogawa
中科院分区：
文献类型：
--
作者：
T. Koseki;T. Ogawa
在恶劣的腐蚀环境中，当焊缝处于熔敷状态时，由于凝固偏析和由此导致的组织不均匀，其性能通常会严重恶化。1-2为了改善凝固组织的性能，因此，高性能不锈钢和高合金材料的焊缝需要比母材更高的合金化。在某些情况下，使用镍基合金。3-4因此，在本研究中，系统地研究了多种铬-镍-铁-钼合金的凝固行为和特征，以弄清凝固微观偏析的程度、焊态条件下金属间化合物相的析出以及决定沉积组织使用性能的凝固方式。这项研究还包括其他元素的影响以及凝固组织与计算的平衡图之间的关系。
When welds are used in an as-deposited condition in severe corrosion environments, their properties generally deteriorate greatly because of solidification segregation and resulting structural inhomogeneity. 1-2 To improve the properties of solidified structures, therefore, welds in high performance stainless steels and high alloy materials need to be more highly alloyed than the base materials. In some cases, Ni based alloys are applied. 3-4 Therefore, in this study, the behaviour and characteristics of solidification were systematically investigated with a wide range of Cr-Ni-Fe-Mo alloys to clarify the extent of solidification microsegregation, the precipitation of intermetallic phases in the as-welded condition, and the solidification modes which determine the service performance of as-deposited structures. The study also covered the effects of additional elements and the relationship between solidification structures and calculated equilibrium diagrams.