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Aging embrittlement of Super 304H steel welded joint

Table of contents Volume 32, Issue 2 . Show all volumes and issues. The tables of contents are generated automatically and are based on the data records of the individual contributions available in the index of the TIB portal. Effect of Sigma Phase on Fracture Behavior of Steels and Dec 20, 2017 · This chapter deals with the change of the structure and mechanical properties of the austenitic steels grades TP347HFG, Super 304H and HR3C as well as their welded joints after the exposure at temperatures corresponding to the ultra-super critical (USC) and advanced ultra-super critical (A-USC) parameters. Several tube bend radii were investigated in order to understand relation

Embrittlement of austenitic stainless steel welds

Jun 01, 1995 · Abstract. To prevent hot-cracking, austenitic stainless steel welds generally contain a small percent of delta ferrite. Although ferrite has been found to effectively prevent hot-cracking, it can lead to embrittlement of welds when exposed to elevated temperatures. The aging behavior of type-308 stainless steel weld has been examined over a Heat Treatment of Welded Joints - Part 2 - TWIHeat treatment of welded joints - Part 2. Part 1 of this series of articles gave definitions of some of the heat treatments that may be applied to a welded joint and dealt with the operation of stress relieving a ferritic steel assembly. The temperature range within which stress relief takes place will also cause tempering of those regions in Hydrogen Dilution Influence on the SiC Films Preparation Ageing Embrittlement of 15Cr1Mo1V Steel Welded Joints Evaluated by Small Punch Test p.1223 Hydrogen Dilution Influence on the SiC Films Preparation and Structural Properties as the Window Layer of p-i-n Solar Cell

Influence of Thermal Aging on Tensile and Low Cycle

May 23, 2018 · Influence of short-term thermal aging on the low-cycle fatigue (LCF) behavior of 316LN austenitic stainless steel weld joint with 0.07 wt pct N has been investigated. Prior thermal exposure was found to improve the fatigue life compared with the as-welded condition. Besides, the treatment also imparted a softening effect on the weld metal, leading to an increase in the ductility of the weld Influence of vanadium filler on the properties of titanium Feb 01, 2017 · Fusion bonding of Ti Ti, Fe Fe and Ti/Fe Ti/Fe butt-welded joints through vanadium filler metal was investigated. Tungsten inert gas (TIG) welding method was employed. The microstructures of the welded joints were analyzed by means of scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD). Local Constitutive Behavior of Undermatched Welded Joints Jun 01, 2020 · Then, the stressstrain relationships of the weld metal (WM), base metal (BM), and subregions of the heat-affected zone (HAZ) of the girth-welded joints of pipeline steel were obtained. Finally, the constitutive parameters of the RambergOsgood model in the different regions were determined by curve fitting of the strain and stress data.

Long term ageing effect on fracture toughness of the GTAW

Dec 01, 2020 · Abstract. Gas tungsten arc welding (GTAW) joints of nuclear power main pipelines were subjected on accelerated thermal ageing tests until 30000 h to investigate long-term ageing effect on fracture property. The results indicate that fracture toughness values JICand JSZWof both base metals and welded metals decreases clearly and fracture mode transits subsequently from typical ductile to brittle fracture with increasing ageing Long-term thermal aging performance of welding structures Dec 15, 2020 · Therefore, the mechanism of thermal aging embrittlement of welding structures in primary coolant pipes is summarized in Fig. 15. Fig. 15(a) shows no precipitation in ferrite of the unaged material. After thermal aging, ferrite phases decompose into coherent Cr-enriched NEUTRON IRRADIATION EMBRITTLEMENT MODELING alloying additions, trace impurity Cu and P increase embrittlement. Cu contents are quite high (up to 0.4%) in some early welds [6]. 1.3 Embrittlement variables in RPV steels . The embrittlement of RPV steels during its service life depends on material chemistry of the steel itself and the irradiation environment (neutron dose) to which it is

Advanced Materials Research Vols. 160-162 p. 23

Ageing Embrittlement of 15Cr1Mo1V Steel Welded Joints Evaluated by Small Punch Test Authors:Yu Hong Yao, Jian Feng Wei, Jiang Nan Liu, Zheng Pin Wang, Yao Hua Jin Abstract:The microstructure and property of 15Cr1Mo1V steel welded joints after 70,000h service have been researched by OM, SEM, Vickers hardness test and small punch test (SPT).