scholarly journals Charpy impact behavior of manganese-stabilized martensitic steels

1986 ◽  
Author(s):  
W. L. Hu ◽  
D. S. Gelles
Keyword(s):  
Charpy Impact ◽  
Impact Behavior ◽  
Martensitic Steels

Charpy Impact Properties of Reduced-Activation Ferritic/Martensitic Steels Irradiated in HFIR up to 20 dpa

2003 ◽  
Vol 44 (1) ◽  
pp. 206-210 ◽  
Author(s):  
H. Tanigawa ◽  
K. Shiba ◽  
M. A. Sokolov ◽  
R. L. Klueh
Keyword(s):  
Charpy Impact ◽  
Martensitic Steels ◽  
Impact Properties

scholarly journals Effects of Silicon Content and Tempering Temperature on the Microstructural Evolution and Mechanical Properties of HT-9 Steels

Materials ◽  
2020 ◽  
Vol 13 (4) ◽  
pp. 972 ◽  
Author(s):  
Junkai Liu ◽  
Wenbo Liu ◽  
Zhe Hao ◽  
Tiantian Shi ◽  
Long Kang ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
Microstructural Evolution ◽  
Charpy Impact ◽  
Hardness Test ◽  
Mechanical Tests ◽  
Fourth Generation ◽  
Martensitic Steels ◽  
Microscopic Mechanism ◽  
Tempering Temperature

Two kinds of experimental ferritic/martensitic steels (HT-9) with different Si contents were designed for the fourth-generation advanced nuclear reactor cladding material. The effects of Si content and tempering temperature on microstructural evolution and mechanical properties of these HT-9 steel were studied. The microstructure of experimental steels after quenching and tempering were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM); the mechanical properties were investigated by means of tensile test, Charpy impact test, and hardness test. The microscopic mechanism of how the microstructural evolution influences mechanical properties was also discussed. Both XRD and TEM results showed that no residual austenite was detected after heat treatment. The results of mechanical tests showed that the yield strength, tensile strength, and plasticity of the experimental steels with 0.42% (% in mass) Si are higher than that with 0.19% Si, whereas hardness and toughness did not change much; when tempered at 760 °C, the strength and hardness of the experimental steels decreased slightly compared with those tempered at 710 °C, whereas plasticity and toughness increased. Further analysis showed that after quenching at 1050 °C for 1 h and tempering at 760 °C for 1.5 h, the comprehensive mechanical properties of the 0.42% Si experimental steel are the best compared with other experimental steels.

scholarly journals Bend and Shear Tests: Suitable Methods for Mechanical Characterization of Laminated Composite Materials

2007 ◽  
Vol 539-543 ◽  
pp. 901-906 ◽  
Author(s):  
Fernando Carreño ◽  
M. Pozuelo ◽  
José A. Jiménez ◽  
Oscar A. Ruano
Keyword(s):  
Mechanical Properties ◽  
Mechanical Characterization ◽  
Laminated Composite ◽  
Charpy Impact ◽  
Impact Behavior ◽  
Bond Quality ◽  
Shear Tests ◽  
Graphical Visualization ◽  
Laminated Composite Materials

Bend and shear tests were used to characterize the improvement in impact behavior of various ultrahigh carbon steel laminated composites. These tests turned out to deliver much more useful information about the mechanical properties of the laminates than the Charpy impact tests and were especially interesting for characterization of laminates of very high toughness values. The toughness of the various laminates was controlled by the rolling conditions that determined the quality of the bond and the appearance of delamination by the interfaces. The bend test allows determination of yield and maximum stresses, absorbed energy and permits graphical visualization of layer fracture and delaminations as testing proceeds. The shear test allows mechanical characterization of the bond quality between layers, permitting prediction of possible delaminations, and therefore, the mechanical properties of the layered material.

Experimental investigation on tensile and Charpy impact behavior of Kevlar/S-glass/epoxy hybrid composite laminates

2017 ◽  
Vol 37 (2) ◽  
pp. 177-184 ◽  
Author(s):  
Ahmet Erkliğ ◽  
Mehmet Bulut
Keyword(s):  
Impact Strength ◽  
Hybrid Composite ◽  
Composite Laminates ◽  
Glass Fibers ◽  
Impact Resistance ◽  
Charpy Impact ◽  
Side Impact ◽  
Impact Behavior ◽  
Absorbed Energy ◽  
Mixing Ratios

Abstract The aim of this study is to evaluate the effect of hybridizing Kevlar and glass fibers on the tensile and Charpy impact properties of their composites. Produced hybrid samples were designed as unbalanced and asymmetric structures in terms of different mixing ratios between woven Kevlar and S-glass fibers, and their tensile properties were determined using ASTM standards. A series of Charpy impact tests were performed to evaluate the amount of impact strength and absorbed energy by impacting each side of the hybrid composite samples. When the hybrid samples were impacted on the surface of the Kevlar side, they exhibited higher impact resistance compared with glass side impact. The resulting degree of hybridization effects showed that addition of Kevlar layers instead of glass layers contributed a significant increase in impact strength and absorbed energy of the overall composite laminate.

Impact Behavior of Cracked Plate Repaired with Composite and FML Patches

2008 ◽  
Vol 47-50 ◽  
pp. 612-616 ◽  
Author(s):  
Mehdi Sadeghinia ◽  
Seyyed Mohammad Reza Khalili ◽  
R. Ghadjar
Keyword(s):  
Crack Length ◽  
Charpy Impact ◽  
Thin Layers ◽  
Impact Behavior ◽  
Single Edge ◽  
Absorbed Energy ◽  
Cracked Plate ◽  
Cracked Plates ◽  
Single Side ◽  
The Impact

In this paper, the impact behavior of repaired cracked plates was investigated experimentally. single edge cracked aluminum plate having crack length to width ratios of 0.1, 0.3 and 0.5 was repaired with four different patch configurations namely: 3 layer GRP, 5 layer GRP patch, 2/1 FML patch and 3/2 FML patches tested in Charpy impact and the energy absorbed by specimens were compared together and compared with the unrepaired cracked plate. FML patches were made of thin layers of glass/epoxy composites of 0.2 mm thickness with phosphor bronze sheets of 0.2 mm thickness. The patching was single side. The composite and FML patching was more effective in repairing the specimens with greater crack length. Placing 3 GRP and 5 GRP patches increased the absorbed energy by only 3 to 4 joules respectively as compared to unrepaired plate. The use of 2/1 and 3/2 FML patches could increase the absorbed energy two to four times depend on crack length.

scholarly journals Effect of grain structure on Charpy impact behavior of copper

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Ningning Liang ◽  
Yonghao Zhao ◽  
Jingtao Wang ◽  
Yuntian Zhu
Keyword(s):  
Charpy Impact ◽  
Grain Structure ◽  
Impact Behavior

Impact Toughness of 0.3 Mass% Carbon Tempered Martensitic Steels Evaluated by Instrumented Charpy Test

2014 ◽  
Vol 783-786 ◽  
pp. 1033-1038
Author(s):  
Shigeto Takebayashi ◽  
Kohsaku Ushioda ◽  
Naoki Yoshinaga ◽  
Shigenobu Ogata
Keyword(s):  
Impact Toughness ◽  
Temperature Dependence ◽  
Impact Energy ◽  
Charpy Impact ◽  
Waveform Analysis ◽  
Charpy Impact Energy ◽  
Martensitic Steels ◽  
Tempering Temperature ◽  
Wide Range ◽  
The Impact

The effect of tempering temperature on the impact toughness of 0.3 mass% carbon martensitic steels with prior austenite grain (PAG) size of about 6 μm and 30 μm were investigated. Instrumented Charpy impact test (ICIT) method was used to evaluate the impact toughness. The tempering temperature of 723K gives the largest difference in the Charpy impact energy at room temperature (RT) between the specimens with two different PAG sizes. Investigation of the test temperature dependence of Charpy impact energy in the 723K tempered steels shows a steep transition at around 200 K for the 6 μm PAG specimen, while it shows a continuous slow transition in a wide range of temperature for the 60 μm PAG specimen. ICIT waveform analysis shows that the fracture propagation energy in stead of the fracture initiation energy mainly controls the temperature dependence of the impact energy. The carbide size distribution in these two specimens was investigated by SEM and TEM. The 60 μm PAG specimen shows the distribution of coarser carbides than does the 6 μm PAG specimen, which seems to be the main reason for the observed difference between them in the Charpy impact energy and the other properties of impact fracture.

Sign in / Sign up

Export Citation Format

Share Document