Influence of Sulfur Content on Penetration Depth in TIG Welding for High Manganese Stainless Steels
Influence of Sulfur Content on Penetration Depth in TIG Welding for High Manganese Stainless Steels
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硫含量对高锰不锈钢TIG焊熔深的影响
DOI：
10.1007/s11661-021-06468-2
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Takahashi Yoshikazu
中科院分区：
文献类型：
--
作者：
Kisaka Yuji;Miki Satoshi;Sekiguchi Nobuo;Kimura Fumiaki;Tashiro Shinichi;Tanaka Manabu;Ozawa Shumpei;Suwa Tomone;Takahashi Yoshikazu
对硫含量为5和20 ppm的高锰不锈钢进行了TIG焊。当试样中的硫含量从5 ppm增加到20 ppm时，焊缝的熔深明显增加。对熔池表面的原位观察表明，焊缝熔深的增加可归因于熔池中心的平均温度从2070 K升高到2200 K，这是由于在熔池中心产生了池中向内的流体流动。采用电磁悬浮技术对高锰不锈钢熔池表面张力进行了精密测量，结果表明，含硫量为20ppm的高锰不锈钢熔池内的内流是由表面张力的回飞镖形温度依赖性驱动的Marangoni对流引起的。数值计算结果较好地再现了熔池内温度分布和流体流动方向随硫含量变化的实验结果，并考虑了等离子体射流、浮力、电磁力和Marangoni对流4种主要驱动力，表明流体流动方向主要受Marangoni对流控制。
TIG welding of high manganese stainless steels was conducted with different sulfur contents of 5 and 20 ppm. The penetration depth of the welding bead clearly increased even when the sulfur content of the sample was only very slightly increased from 5 to 20 ppm.In situobservation of the surface of the molten pool revealed that the increase in penetration depth of the welding bead could be attributed to an elevation of the average temperature at the center of the molten pool from 2070 to 2200 K due to the generation of an inward fluid flow in the pool. The results of precise measurements of the surface tension of molten high manganese stainless steels using the electromagnetic levitation (EML) technique, thoroughly explained that the inward flow in the molten pool of the sample containing a sulfur content of 20 ppm was induced by Marangoni convection driven by the boomerang shape temperature dependence of the surface tension of the molten sample. The experimental results of the variations in the temperature distribution and the fluid flow direction in the molten pool depending on the sulfur content were reproduced well by a numerical calculation considering the four dominant driving forces of plasma jet, buoyancy, electromagnetic forces, and Marangoni convection, which indicated that the fluid flow direction was dominantly controlled by Marangoni convection.
ITER用高锰奥氏体不锈钢JK2LB中央电磁阀护套材料的力学性能
DOI：
10.1016/j.phpro.2015.06.193
发表时间：
2015
期刊：
影响因子：
--
作者：
Toru Saito;K. Kawano;T. Yamazaki;H. Ozeki;T. Isono;K. Hamada;A. Devred;A. Vostner
通讯作者：
A. Vostner
不同硫含量的小体积熔体的表面效应和流动条件
DOI：
10.1002/srin.200100087
发表时间：
2001
期刊：
影响因子：
--
作者：
P. Scheller
通讯作者：
P. Scheller
ITER 中央螺线管导体导管的机械特性
DOI：
10.2221/jcsj.54.437
发表时间：
2019
期刊：
TEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan)
影响因子：
--
作者：
K. Hamada;Y. Takahashi;T. Suwa
通讯作者：
T. Suwa