Results 61 to 70 of about 340 (168)

Evolution of Microstructure and Mechanical Properties of Steam Generator Material After Long-Term Operation in Nuclear Power Plant

Metals
The microstructural evolution and mechanical properties of WWER 440 steam generator steel GOST 22K after long-term operation were thoroughly examined in this study. The samples were taken directly from a steam generator using the small punch test method.
David Slnek, Mária Dománková, Marek Adamech, Jana Petzová, Katarína Bártová, Marek Kudláč, Matúš Gavalec   +6 more
doaj   +1 more source

Development of innovative steels and thermo-mechanical treatments for DEMO high operating temperature blanket options

Nuclear Materials and Energy, 2018
Among the options currently taken into account for the realization of the first DEMO reactor there are the “helium-cooled” and the “dual coolant” breeding blanket.
C. Cristalli, L. Pilloni, O. Tassa, L. Bozzetto, R. Sorci, L. Masotti   +5 more
doaj   +1 more source

Prediction of fracture toughness by application of stress distribution T-scaling method under compressive residual stress

Nihon Kikai Gakkai ronbunshu, 2017
The fracture toughness Jc of the material in the ductile to brittle transition temperature (DBTT) region shows test specimen thickness (TST) effect and temperature dependence, and apparently increases when compressive residual stress is applied.
Kenichi ISHIHARA, Toshinori SHIMOIKE, Toshiyuki MESHII   +2 more
doaj   +1 more source

Ductile–Brittle Transition Mechanism and Dilute Solution Softening Effect of Body-Centered Cubic Metals

Metals
Body-centered cubic (BCC) metals, extensively utilized in low-alloy high-strength steels and heat-resistant alloys, exhibit a pronounced ductile–brittle transition (DBT) at cryogenic temperatures, marked by a well-defined yet narrow ductile–brittle ...
Jie Zhang, Tianliang Zhao, Tingping Hou, Yan Li, Kaiming Wu   +4 more
doaj   +1 more source

Tempering temperature effect on the static and impact properties of 51CrV4 and 55Cr3 spring steels

Materials Research Express
This study investigated the impact of tempering temperature on the mechanical properties and microstructure of 51CrV4 and 55Cr3 spring steels, which are commonly utilized in the manufacturing of leaf springs.
Gülcan Toktaş, Adem Biçer
doaj   +1 more source

Microstructural optimization by two-step tempering treatment and quantitative analysis of microstructure effect on the toughness at −40 °C in CrNiMoV steel

Journal of Materials Research and Technology
30CrNiMoV steel is widely used in engineering applications, where, in addition to high strength requirements, the demand for enhanced toughness is increasingly critical for safety. This study proposes a novel two-step tempering process that optimizes the
Li Wang, Junwei Qin, Yuzhi Zhu, Kaixuan Chen, Yanlin Wang, Zidong Wang   +5 more
doaj   +1 more source

A procedural and technical experimental review on material tensile and impact properties under cryogenic temperatures [PDF]

E3S Web of Conferences
In this paper, research and comparison of tensile and impact properties were conducted on several materials broadly categorized as Steel and Alloys at cryogenic temperature of 77 K or -196°C.
Ahzhan M. F. A., Muttaqie Teguh, Prabowo Aditya Rio, Fajri Aprianur, Suryanto Suryanto, Do Quang Thang, Djordjevic Branislav, Baek Seung Jung   +7 more
doaj   +1 more source

Influence of Inclusions on the Mechanical Properties of RAFM Steels Via Y and Ti Addition

Metals, 2019
The effects of the Y- and Ti-containing inclusions on the tensile and impact properties of reduced activation ferritic martensitic (RAFM) steels were evaluated. Four steels with different Y and Ti contents were produced via vacuum induction melting.
Guoxing Qiu, Dongping Zhan, Changsheng Li, Yongkun Yang, Min Qi, Zhouhua Jiang, Huishu Zhang   +6 more
doaj   +1 more source

Controlling Variability in Mechanical Properties of Plates by Reducing Centerline Segregation to Meet Strain-Based Design of Pipeline Steel

Metals, 2019
Low variability in mechanical properties is required for pipeline project designs to meet a strain-based design, which is used in regions of large ground movements.
Fujian Guo, Wenle Liu, Xuelin Wang, R.D.K. Misra, Chengjia Shang   +4 more
doaj   +1 more source

Impact Toughness Dependent on Annealing Temperatures in 0.16C-6.5Mn Forged Steel for Flywheel Rotors

Metals
For the application of forged medium-Mn steels on flywheel rotors, the effect of annealing temperatures from 300 °C to 650 °C on the impact toughness of 0.16C-6.5Mn forged steel was investigated to demonstrate the microstructural characteristics and ...
Tinghui Man, Jun Wang, Hongshan Zhao, Han Dong   +3 more
doaj   +1 more source