Variations of microstructure and properties of 690MPa grade low carbon bainitic steel after tempering

Feng, Rui; Li, Shengli; Li, Zhenshun; Lu, Tian

doi:10.1016/j.msea.2012.07.113

Cited by 35 publications

(6 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…After being tempered, formerly bainite could transform into a structure with granular bainites, which could merge together and become coarser. The microstructure is consistent with the literature [ 23 ].…”

Section: Resultssupporting

confidence: 91%

Design of Boiler Welding for Improvement of Lifetime and Cost Control

Thong-on

Boonruang

2016

Materials

View full text Add to dashboard Cite

Fe-2.25Cr-1Mo a widely used material for headers and steam tubes of boilers. Welding of steam tube to header is required for production of boiler. Heat affected zone of the weld can have poor mechanical properties and poor corrosion behavior leading to weld failure. The cost of material used for steam tube and header of boiler should be controlled. This study propose a new materials design for boiler welding to improve the lifetime and cost control, using tungsten inert gas (TIG) welding of Fe-2.25Cr-1Mo tube to carbon steel pipe with chromium-containing filler. The cost of production could be reduced by the use of low cost material such as carbon steel pipe for boiler header. The effect of chromium content on corrosion behavior of the weld was greater than that of the microstructure. The lifetime of the welded boiler can be increased by improvement of mechanical properties and corrosion behavior of the heat affected zone.

show abstract

Section: Resultssupporting

confidence: 91%

Design of Boiler Welding for Improvement of Lifetime and Cost Control

Thong-on

Boonruang

2016

Materials

View full text Add to dashboard Cite

show abstract

“…With the increase in softened annealing time, the dislocation density decreases gradually. According to the two fluid models [ 40 ], the moving electrons are scattered and hindered on the dislocations. Meanwhile, the decrease in dislocation density will lead to not only the increase in effective charge density participating in the conduction, but also the enhancement of current transmission ability [ 41 ].…”

Section: Discussionmentioning

confidence: 99%

Softened Microstructure and Properties of 12 μm Thick Rolled Copper Foil

et al. 2022

Self Cite

View full text Add to dashboard Cite

Up to now, 12 μm thick rolled copper foil is the thinnest rolled copper foil that can be stably produced. The softened microstructure and properties of 12 μm thick rolled copper foil were systematically studied in this paper. The softened process consists of thermal treatment at 180 °C for different times. The results show that the softened annealing texture is mainly cubic texture, and the cubic texture fraction increases with the increase in annealing time. The cubic texture fraction reaches the highest (34.4%) after annealing for 60 min. After annealing for 1–5 min, the tensile strength and the bending times decrease significantly. After annealing for 10–60 min, the tensile strength tends to be stable, and the bending times increase slightly. With the increase in annealing time, the electrical conductivity increases gradually, reaching 92% International Annealed Copper Standard (IACS) after annealing for 60 min. Electrical conductivity can be used as a fast and effective method to analyze the microstructure of metals.

show abstract

“…The stress-strain curves of E690 steel BM and three simulated microstructures in air and artificial seawater are plotted in figure 4(a). The tensile strength of the FGHAZ microstructure was higher than other microstructures, which is due to fine-grain, high density dislocation, and dispersion strengthening effects of granular bainite in FGHAZ [25,26]. The elongation of FGHAZ was relatively low whereas the value of ICHAZ was much higher.…”

Section: Stress Corrosion Cracking Behavior Analysismentioning

confidence: 99%

“…This difference may be attributed to the fact that the continuity of polygonal ferrite was broken by the granular bainite and the M-A islands dispersed in the mixture as hard phases. These M-A islands can pin dislocations and the lattice distortion caused by these M-A islands can induce the brittle fracture [25]. The elongation of ICHAZ is higher which may be due to the formation of the polygonal ferrite phase, which can provide the channel for dislocation gliding in a broad range [27,28].…”

Section: Stress Corrosion Cracking Behavior Analysismentioning

confidence: 99%