Effect of Ca–Sr–Mg and Bi–Sr–Mg Interactions on the Microstructural Characterization and Tensile Properties of B319 Alloy

2022 ◽  
Author(s):  
A. M. Samuel ◽  
H. R. Ammar ◽  
Y. Zedan ◽  
H. W. Doty ◽  
F. H. Samuel
Keyword(s):  
Tensile Properties ◽  
Microstructural Characterization

scholarly journals The Role of Microstructure on Tensile Plastic Behavior of Ductile Iron GJS 400 Produced through Different Cooling Rates, Part I: Microstructure

Metals ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 1282 ◽  
Author(s):  
Giuliano Angella ◽  
Dario Ripamonti ◽  
Marcin Górny ◽  
Stefano Masaggia ◽  
Franco Zanardi
Keyword(s):  
Grain Size ◽  
Tensile Properties ◽  
Ductile Iron ◽  
Microstructural Characterization ◽  
Graphite Nodule ◽  
Plastic Behavior ◽  
Quantitative Metallography ◽  
Cooling Rates ◽  
X Ray

A series of samples made of ductile iron GJS 400 was cast with different cooling rates, and their microstructural features were investigated. Quantitative metallography analyses compliant with ASTM E2567-16a and ASTM E112-13 standards were performed in order to describe graphite nodules and ferritic grains. The occurrence of pearlite was associated to segregations described through Energy Dispersive X-ray Spectroscopy (EDS) analyses. Results were related to cooling rates, which were simulated through MAGMASOFT software. This microstructural characterization, which provides the basis for the description and modeling of the tensile properties of GJS 400 alloy, subject of a second part of this investigation, highlights that higher cooling rates refines microstructural features, such as graphite nodule count and average ferritic grain size.

Fatigue of Extruded Steel/Nial Composites

1992 ◽  
Vol 273 ◽  
Author(s):  
M. K. Bannister ◽  
S. M. Spearing ◽  
J. P. A. Löfvander ◽  
M. De Graef
Keyword(s):  
Stainless Steel ◽  
Elastic Modulus ◽  
Fracture Surface ◽  
Tensile Properties ◽  
Microstructural Characterization ◽  
Fatigue Tests ◽  
Steel Tubes ◽  
High Fatigue ◽  
Intermittent Measurement ◽  
Fast Fracture

ABSTRACTFatigue tests were performed on a novel, extruded, stainless steel/NiAl composite having good impact and tensile properties. A high fatigue limit was observed to occur at approximately 67% of the σUTS. The fracture surface showed a distinct change in morphology between the fatigued and fast fracture areas and the formation and growth of microcracks was postulated as the initial fatigue mechanism. The microcrack development was monitored by intermittent measurement of the elastic modulus and associated hysteresis. Microstructural characterization by means of SEM, TEM and EDS revealed the existence of approximately 100nm diameter Al2O3 particles decorating the interface between the NiAl and the stainless steel tubes.

Mechanical and Microstructural Characterization of 8 mm Thick Samples of SS 316L by CO2 Laser Welding

2012 ◽  
Vol 585 ◽  
pp. 430-434 ◽  
Author(s):  
B. Ramesh Kumar ◽  
N. Chauhan ◽  
P.M. Raole
Keyword(s):  
Laser Beam ◽  
Laser Welding ◽  
Tensile Properties ◽  
Base Metal ◽  
Weld Zone ◽  
Laser Beam Welding ◽  
Microstructural Characterization ◽  
Mechanical Tests ◽  
Destructive Testing

Laser beam welding offers various advantages over the other conventional weld processes. In fusion reactor, some critical components with high weld quality are proposed to be fabricated with Laser beam welding. The present paper reports the mechanical properties and micro structural characterization of 8 mm thick SS 316L samples fabricated with high power CO2 Laser welding system. The process parameters of 3.5 kW and speed of 600 mm/min with Argon shielding gas are used. The Laser welded samples are subjected to non destructive testing with X-ray radiography and ultrasonic tests. The welded samples tested have indicated good quality joints with full penetration and no significant porosity and cracks. Further, the samples are subjected to standard mechanical tests namely tensile properties test (UTS), bend test and Impact Fracture test. The Laser weld joints produced better tensile properties as compared to the base metal. In addition, Vickers hardness tests and optical microstructure are studied for the base metal (BM), Heat Affected Zone (HAZ) and weld zone(WZ).

Effect of tool velocity ratio on tensile properties of friction stir processed aluminum based metal matrix composites

2016 ◽  
Vol 25 (3-4) ◽  
pp. 99-109 ◽  
Author(s):  
P. Vijayavel ◽  
V. Balasubramanian
Keyword(s):  
Tensile Properties ◽  
Heat Generation ◽  
Metal Matrix ◽  
Velocity Ratio ◽  
Microstructural Characterization ◽  
Traverse Speed ◽  
Matrix Composites ◽  
Excessive Heat ◽  
Friction Stir ◽  
Processed Material

AbstractIn friction stir processing (FSP), tool rotational speed (TRS) and tool traverse speed (TTS) are the two important parameters, known to produce significant changes in the properties of the processed material. Increasing the TRS and TTS beyond a certain level would produce undesirable results. The heat generation will increase with an increase in the TRS and decrease in TTS. Excessive heat generation results in the formation of coarse grains exhibiting poor mechanical properties. The heat generation will decrease with decrease in the TRS and increase in TTS. Low heat generation will lead to inadequate plasticization and improper material flow. Hence a perfect combination of TRS and TTS is required to attain desirable properties in FSPed material. In this investigation FSP was carried out on aluminum based metal matrix composite (LM25AA+5%SiCp) material using five different tool velocity ratios (TVR: TRS/TTS). The FSP was subjected to microstructural characterization and tensile properties, evaluation. The results revealed that the TVR of 2.6 yielded superior tensile properties compared to other conditions.

Microstructural Characterization and Tensile Properties of Al-Mg-Fe-Ce Alloy at Room and Elevated Temperatures

JOM ◽  
2020 ◽  
Vol 72 (4) ◽  
pp. 1619-1626
Author(s):  
A. V. Mikhaylovskaya ◽  
A. A. Kishchik ◽  
N. Yu. Tabachkova ◽  
A. D. Kotov ◽  
V. V. Cheverikin ◽  
...  
Keyword(s):  
Tensile Properties ◽  
Elevated Temperatures ◽  
Microstructural Characterization

scholarly journals Precipitation Behavior of Orthorhombic Phase in Ti-22Al-25Nb Alloy during Slow Cooling Aging Treatment and Its Effect on Tensile Properties

Metals ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1515
Author(s):  
Beibei Wei ◽  
Bin Tang ◽  
Xiaofei Chen ◽  
Qin Xu ◽  
Shuaijin Zhang ◽  
...  
Keyword(s):  
Grain Boundaries ◽  
Tensile Properties ◽  
Aging Treatment ◽  
Microstructural Characterization ◽  
Orthorhombic Phase ◽  
Tensile Tests ◽  
Precipitation Behavior ◽  
Interface Instability ◽  
Slow Cooling ◽  
O Phase

The precipitation behavior of the orthorhombic (O) phase during the slow cooling aging treatment of Ti-22Al-25Nb (at.%) alloy was investigated by microstructural characterization. Then the effect of O phase precipitation on the tensile properties was studied by room-temperature tensile tests. The results showed that the precipitation of the O phase transformed from both grain boundaries and intragranular to only grain boundaries with the temperature increasing. The nucleation mechanism of the O phase from intergranular is composed of sympathetic nucleation and interface instability nucleation. In addition, the results of tensile tests indicated that the ultimate tensile strength of the alloy decreases as the precipitation of the O phase increases. Meanwhile, from the tensile results, it is concluded that the optimum heat treatment process is slow cooling after aging at 950 °C for 1 h.

scholarly journals Microstructural characterization, solidification characteristics and tensile properties of Al–15%Mg2Si–x(Gd–Sb) in-situ composite

2020 ◽  
Vol 9 (3) ◽  
pp. 3272-3291 ◽  
Author(s):  
Hamidreza Ghandvar ◽  
Mohd Hasbullah Idris ◽  
Tuty Asma Abu Bakar ◽  
Afshin Nafari ◽  
Norhayati Ahmad
Keyword(s):  
Tensile Properties ◽  
Microstructural Characterization ◽  
In Situ Composite
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