INVESTIGATION OF MICROSTRUCTURES AND MECHANICAL PROPERTIES OF T92 MARTENSITIC STEEL/SUPER304 AUSTENITIC STEEL WELD JOINTS MADE WITH THREE WELDING CONSUMABLES

被引：4
作者：
Liang, Z. [1 ]
Gui, Y. [1 ]
Zhao, Q. [1 ]
机构：
[1] Xi An Jiao Tong Univ, Sch Energy & Powerengn, Key Lab Thermal Fluid Sci & Engn, MOE, Xian 710049, Shaanxi, Peoples R China
来源：
ARCHIVES OF METALLURGY AND MATERIALS | 2018年 / 63卷 / 03期
关键词：
Dissimilar welding; Welding materials; Microstructures; Mechanical properties; CREEP DEFORMATION; HIGH-TEMPERATURE; STABILITY; BEHAVIOR; P92;
D O I：
10.24425/123798
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The microstructures and mechanical properties of T92 martensitic steel/Super304 austenitic steel weld joints with three welding consumables were investigated. Three types of welding materials ERNiCr-3, ERNiCrCoMo-1 and T-304H were utilized to obtain dissimilar welds by using gas tungsten arc weld (GTAW). The results show that heat affect zone (HAZ) of T92 steel consists of coarse-grained and fine-grained tempered martensites. The microstructures of joints produced from ERNiCrCoMo-1 consist of equiaxed dendrite and columnar dendrite grains, which are more complicated than that of ERNiCr-3. In the tensile tests, joints constructed from ERNiCrCoMo-1 and T-304H met the ASME standard. The highest fracture energy was observed in specimens with the welding material ERNiCrCoMo-1. Ni content in weld seam of ERNiCrCoMo-1 was highest, which was above 40%. In conclusion, the nickel alloy ERNiCrCoMo-1 was the most suitable welding material for joints produced from T92 martensitic steel/Super304 austenitic steel.
引用
收藏
页码：1249 / 1256
页数：8
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