Results 61 to 70 of about 41,365 (304)

Hydrogen‐Assisted Fracture of Iron‐Based Fe–Ni–Al Alloys

Advanced Engineering Materials, EarlyView.
Principal relations and fracture mechanisms of single‐phase and precipitate‐strengthened Fe–Ni–Al alloys subjected to prior electrochemical hydrogen charging are identified. The mechanisms of hydrogen effect on strength and microhardness are discussed, including hydrogen‐induced increase in microhardness and the role of hydrogen in fracture behavior ...
Nataliya Yadzhak, Olha Zvirko, Rostyslav Leshchak, Hryhoriy Nykyforchyn   +3 more
wiley   +1 more source

Intrinsic Mechanisms of Ductile-brittle Transition for F460 Steel Welding Coarse Grained Heat Affected Zones with Different Heat Inputs

Cailiao gongcheng, 2016
Coarse grain heat affected zone (HAZ) of F460 steel was simulated by a Gleeble 3800 thermo-mechanical simulator. The microstructure, critical event of the HAZ formed at various heat inputs (E) were characterized and determined by optical microscopy (OM ...
LI Jing, CAO Rui, MAO Gao-jun, LIU Dong-sheng, CHEN Jian-hong   +4 more
doaj   +1 more source

Estimation of the Fracture Toughness Threshold of a Ferritic Steel at the Lower Ductile to Brittle Transition Region [PDF]

Materials Research, 2016
The ADN420 ferritic steel (A615 steel Grade 60 [420]), used as reinforcing bars (rebar) in concrete, shows the so called ductile to brittle transition. Room temperature is located on the lower third region of the transition zone.
Carlos Berejnoi, Santiago Vacca, Claudia Galarza, Juan Elías Perez Ipiña   +3 more
doaj   +1 more source

Analytical modeling of surface roughness in precision grinding of particle reinforced metal matrix composites considering nanomechanical response of material [PDF]

, 2019
Grinding is usually applied for particle reinforced metal matrix composites (PRMMCs) to achieve high ground surface quality. However, the surface quality especially surface roughness is difficult to predict theoretically due to different mechanical ...
Cai, Rui, Huang, Chuanzhen, Wang, Jun, Yao, Peng, Zhang, Zhenzhong, Zhu, Hongtao   +5 more
core   +1 more source

Creep Properties and Deformation Mechanism of Additively Manufactured NiAl‐CrMo Composites

Advanced Engineering Materials, EarlyView.
Additively manufactured NiAl‐CrMo composites contain numerous interfaces and cell boundaries that control their creep response. At 700°C under high applied stress, creep is dominated by dislocation‐controlled power‐law mechanisms. At 800°C–900°C and lower stresses, creep is primarily diffusion‐controlled along cell boundaries.
Jan Vollhüter, Andreas Bezold, Johan Westraadt, Katharina Fiegl, Subham Chattoraj, Benjamin Wahlmann, Carolin Körner, Michael Mills, Mathias Göken, Steffen Neumeier   +9 more
wiley   +1 more source

A New Method for Determining the Brittle-to-Ductile Transition Temperature of a TiAl Intermetallic

Metals, 2020
Intermetallic materials typically change their deformation behavior from brittle to ductile at a certain temperature called the Brittle-to-Ductile Transition Temperature (BDTT). This specific temperature can be determined by the Charpy impact, tensile or
Sarper Nizamoglu, Karl-Heinz Lang, Stefan Guth, Martin Heilmaier   +3 more
doaj   +1 more source

Temperature and pore pressure effects on the shear strength of granite in the brittle-plastic transition regime [PDF]

, 2004
Currently published lithospheric strength profiles lack constraints from experimental data for shear failure of typical crustal materials in the brittle-plastic transition regime in wet environments.
Mochizuki, H, Odedra, A, Ohnaka, M, Sammonds, P   +3 more
core   +1 more source

Enhanced Strength and Corrosion Resistance of Ti‐13Nb‐12Ta‐10Zr‐4Sn Alloy by Aging Treatment

Advanced Engineering Materials, EarlyView.
This work systematically investigates the effect of aging treatment on mechanical properties and corrosion behavior of vacuum arc‐melted Ti‐13Nb‐12Ta‐10Zr‐4Sn alloy. Owing to the increased α″ martensite, strength and corrosion resistance were significantly enhanced by aging treatment.
Yuhua Li, Rong Zhao, Qian Zhang, Haojie Wang, Yujing Liu, Lai‐Chang Zhang   +5 more
wiley   +1 more source

Delamination induced exceptional cryogenic toughness in ferrite/martensite dual-phase layered steels

Materials Research Letters
The ductile-to-brittle transition (DBT) with decreasing temperature in Body-centered cubic (BCC) steels restricts their application in cryogenic environments.
Bo Yang, Jiazhen He, Tianlong Liu, Baoxi Liu, Fuxing Yin, Zhichao Luo   +5 more
doaj   +1 more source

Elevated-temperature impact toughness of Mg–(Gd, Y)–Zr alloy [PDF]

, 2013
The Charpy impact results for Mg–10Gd–3Y–0.5Zr and Mg–11Y–5Gd–2Zn–0.5Zr alloys at various temperatures showed that Mg–10Gd–3Y–0.5Zr was more sensitive to temperature. The increase in impact toughness with temperature was related to the blunt crack-tip at
Anyanwu, Anyanwu, D.D. Yin, He, Hu, Hu, Janik, Kum, Liao, Liao, Liu, M.L. Hu, Ma, Q.D. Wang, Somekawa, Somekawa, Somekawa, Somekawa, Somekawa, Somekawa, Somekawa, V. Janik, Y.L. Mu, Yin, Yin   +24 more
core   +1 more source