Microstructural characteristics and creep rupture behavior of electron beam and laser welded AISI 316L stainless steel

Tjong, S.C.; Zhu, Su-Ming; Ho, New-Jin; Ku, J. S.

doi:10.1016/0022-3115(95)00142-5

Cited by 35 publications

(16 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…A crack was found to have initiated at the interface between weld metal and RPV base metal. In recent studies, it was pointed out that weld heat affected zone has lower creep strength than base metal (Laha et al, 2000;Otoguro et al, 2000;Tjong et al, 1995). Although these kinds of material for creep strength study of heat affected zone are different from RPV base metal of SA533B, we can consider the possibility that it makes similar embrittlement mechanism in SA533B.…”

Section: Destructive Examination Of Snl-lhf Vesselmentioning

confidence: 95%

Bottom nozzle failure mechanism of water reactor pressure vessel under severe accident conditions

Lim

Jeong

et al. 2007

Nuclear Engineering and Design

View full text Add to dashboard Cite

Section: Destructive Examination Of Snl-lhf Vesselmentioning

confidence: 95%

Bottom nozzle failure mechanism of water reactor pressure vessel under severe accident conditions

Lim

Jeong

et al. 2007

Nuclear Engineering and Design

View full text Add to dashboard Cite

“…It is believed that the dendritic mode of solidified structure is resulted from high speed, localised heat of ASW process and existing of relatively high thermal conductive Ni powder ( Table 1). All these factors led to decrease the G/R ratio, where, G is thermal gradient and R is solidification rate and encourage dendritic over cellular structure 21,22 .…”

Section: Macrostructure and Microstructure Examinationmentioning

confidence: 99%

Effect of Nickel Powder Buffering Layer on Microstructure and Hardness Properties of High Carbon Steel / Stainless Steel Arc Stud Welding

Alali

Abass²,

Abbas

et al. 2020

Mat. Res.

View full text Add to dashboard Cite

In this study, arc stud welding process was employed for welding AISI 316 stainless steel studs to AISI 1060 high carbon steel plates. A disc of Ni powder prepared and used as a buffering layer to enhance the properties of welding area. Optical and scanning electron microscopy were used to examine the microstructure. Energy-Dispersive X-ray (EDX) and X-Ray Diffraction (XRD) tests were performed to analyse and identify elements and phases, respectively in the weld region. The results observed that Ni powder prevented the direct contact between the dissimilar base metals. Existing of Ni altered the microstructure of the weld zone and encouraged dendritic type over cellular. Hardness reduced in the weld region from 600 HV to 200 HV due to the effect of Ni powder which prevented the formation of brittle Fe-Cr phase.

show abstract

“…在无保护气体的情况下，同样是焊缝区的平均显微硬度最低，约为 206 HV0.1，母材的平均显微硬度次之，约为 218 HV0.1，热影响区的平均显微硬度最高，约为 235 HV0.1。由此可见，无论是否加保护气体显微硬度的大小顺序均为热影响区>母材>焊缝区。其原因可能是母材在冷拨过程中会产生塑性变形，这种变形使其自身产生内应力，从而使母材力学性能增加，而在焊接过程中，母材金属局部熔化后重新凝固结晶，此过程使母材的畸变能和内应力得以释放，焊缝区得到软化，所以焊缝的显微硬度最低 [11] 。焊缝的热影响区由于冷却速度…”

Section: -unclassified

Effect of Shielding Gas on Laser Welding of Austenitic Stainless Steel

Jian¹,

Yan²,

Jia³

et al. 2014

激光与光电子学进展

View full text Add to dashboard Cite

In order to study the effect of shielding gas on mechanical properties of austenitic stainless steel welding joint, a comparison between weld with shielding gas and weld with no shielding gas in the same line energy is studied. Austenitic stainless steel in 0.7 mm thick is welded by using Nd:YAG laser, the microstructure and mechanical properties of the welding joint are analyzed by means of scanning electron microscope (SEM), micro-hardness tester and material testing machine. Results show that two types of welding both achieve full penetration, and have good weld-forming in the same laser processing parameters. When welding with no shielding gas, with the decrease of welding speed, the tensile strength of welded joints also decrease. The decrease rate reaches 20% at most. After adding shielding gas, the tensile strength of welded joints changes smoothly, all tensile strength are over 90% of matrix.

show abstract

Microstructural characteristics and creep rupture behavior of electron beam and laser welded AISI 316L stainless steel

Cited by 35 publications

References 18 publications

Bottom nozzle failure mechanism of water reactor pressure vessel under severe accident conditions

Bottom nozzle failure mechanism of water reactor pressure vessel under severe accident conditions

Effect of Nickel Powder Buffering Layer on Microstructure and Hardness Properties of High Carbon Steel / Stainless Steel Arc Stud Welding

Effect of Shielding Gas on Laser Welding of Austenitic Stainless Steel

Contact Info

Product

Resources

About