Results 61 to 70 of about 80,852 (303)

Phase Field Failure Modeling: Brittle‐Ductile Dual‐Phase Microstructures under Compressive Loading

Advanced Engineering Materials, EarlyView.
The approach by Amor and the approach by Miehe and Zhang for asymmetric damage behavior in the phase field method for fracture are compared regarding their fitness for microcrack‐based failure modeling. The comparison is performed for the case of a dual‐phase microstructure with a brittle and a ductile constituent.
Jakob Huber, Jan Torgersen, Ewald Werner
wiley   +1 more source

TiN-containing high-heat-input welding steels: Optimizing Ti/N ratio and precipitation temperature for enhanced low-temperature impact toughness in coarse-grained heat-affected zones

Journal of Materials Research and Technology
To enhance the low-temperature impact toughness of the coarse-grained heat-affected zone (CGHAZ) in high-heat-input welding steels, TiN-containing steels with tailored Ti and N contents were designed.
Junjie Hao, Chao Wang, Hua Duan, Zhu Yan, Guo Yuan, Guo-dong Wang   +5 more
doaj   +1 more source

Impact Toughness Modification of NIST Low-Energy Charpy Verification Specimens for Testing at Room Temperature

Journal of Research of the National Institute of Standards and Technology, 2017
The possibility for the National Institute for Standards and Technology (NIST) to certify Charpy reference specimens for testing at room temperature (21 °C ± 1 °C) instead of −40 °C was investigated in a previous study, in which a slightly increased likelihood of specimen jamming was observed at the low-energy level (13 J to 20 J). Moreover, there is a
Enrico, Lucon, Ray L, Santoyo
openaire   +2 more sources

Influence of equal-channel angular extrusion on impact toughness of aluminum and brass at room and low temperatures [PDF]

International Journal of Mechanical and Materials Engineering, 2014
Abstract Background Equal-channel angular extrusion is a severe plastic deformation process that can be used for grain refinement to improve material properties of bulk metals. In this paper, the effect of equal-channel angular extrusion on the impact toughness of aluminum 1100 and brass C26000 was investigated.
Wang, Jyhwen, Zhu, Huanlin, Sudhakar, K Vadiraja, Price, Angie Hill   +3 more
openaire   +1 more source

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

Fatigue Crack Initiation and Growth in Nanocrystalline Ni at Multiple Length‐Scales

Advanced Engineering Materials, EarlyView.
Overview of miniaturized in situ SEM fatigue setup and resultant fatigue crack growth data for nanocrystalline Ni. The presented study focuses on the analysis of fatigue crack growth rate (FCGR) in focused ion beam‐notched microcantilevers prepared from nanocrystalline (NC) Ni as a model material.
Igor Moravcik, Alexander Jelinek, Markus Alfreider, Jutta Luksch, Anton Hohenwarter, Florian Schaefer, Christian Motz, Daniel Kiener   +7 more
wiley   +1 more source

Effect of Post-Weld Heat Treatment on -20℃ Impact Toughness of Heat Affected Coarse Grain Zone of Steel 07MnCrMoVR

Teshugang, 2020
The microstructure and properties of the heat affected coarse grain zone of steel 07MnCrMoVR with post¬weld heat treated at 460 ~ 660 °C for 2 h are analyzed by means of optical microscope, scanning microscope, transmission electron microscope and impact
冯路路, 乔文玮, 鲁修宇, 周峰
doaj  

Improving mechanical properties for extrusion-based additive manufacturing of poly(lactic acid) by annealing and blending with poly(3-hydroxybutyrate) [PDF]

, 2019
Based on differential scanning calorimetry (DSC), X-ray diffraction (XRD) analysis, polarizing microscope (POM), and scanning electron microscopy (SEM) analysis, strategies to close the gap on applying conventional processing optimizations for the field ...
Cardon, Ludwig, D'hooge, Dagmar, Daelemans, Lode, De Clerck, Karen, Fiorio, Rudinei, Gou, Maling, Wang, Sisi   +6 more
core   +1 more source

High‐Temperature Nanoindentation of Metals: Assessing Thermal Drift, Frame Compliance, and Chemical Composition Effects on the Reported Mechanical Properties

Advanced Engineering Materials, EarlyView.
Do not let thermal drift and instrument artifacts deceive high‐temperature nanoindentation results. We compare classical Oliver–Pharr and automatic image recognition analyses across steels and a Ni alloy to quantify these effects. Accounting for artifacts reveals systematic softening with temperature, while Cr and Ni additions boost resistance ...
Velislava Yonkova, Steffen Brinckmann, Ruth Schwaiger   +2 more
wiley   +1 more source

Evaluation of Toughness of High Strength Low Alloy (HSLA) Steels as a Function of Carbon Content [PDF]

, 2019
The influence of carbon content on the microstructure and toughness of HSLA steel at room temperature was investigated based on experimental work and literature.
Naher, S., Qaban, A.
core