MICROCAST-X MAR-M-247

Alloy Digest ◽  
1995 ◽  
Vol 44 (5) ◽  
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Tensile Properties ◽  
Negative Impact ◽  
Rupture Properties

Abstract The Microcast-X process produces a substantially finer grain size that improves mechanical properties in MAR-M-247 with modest negative impact on rupture properties above 1600 F (871 C). This datasheet provides information on composition, microstructureand tensile properties as well as creep and fatigue. It also includes information on casting. Filing Code: Ni-481. Producer or source: Howmet Corporation.

MICROCAST-X IN-718

Alloy Digest ◽  
1995 ◽  
Vol 44 (6) ◽  
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Tensile Properties ◽  
Negative Impact ◽  
Heat Treating ◽  
Rupture Properties

Abstract The Microcast-X process produces a finer grain size than earlier produced castings which improves mechanical properties in IN-718 without negative impact on rupture properties in temperatures of interest for applications in the aerospace market. This datasheet provides information on composition, microstructureelasticity, and tensile properties as well as fatigue. It also includes information on casting and heat treating. Filing Code: Ni-482. Producer or source: Howmet Corporation.

Effect of La-Rich Misch Metal on Microstructure and Mechanical Properties of As-Extruded Mg-14Li-3Al Alloy

2011 ◽  
Vol 391-392 ◽  
pp. 32-36 ◽  
Author(s):  
Bin Liu ◽  
Jing Huai Zhang ◽  
Zhong Yi Niu ◽  
Jun Qing Li
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Tensile Properties ◽  
Grain Refinement ◽  
Hot Extrusion ◽  
Vacuum Melting ◽  
Melting Method ◽  
Misch Metal ◽  
Microstructure And Mechanical Properties

The as-cast Mg-14Li-3Al-(0-0.9)RE alloys were prepared with vacuum melting method, then processed by hot extrusion. The microstructure and tensile properties were investigated. The results show that both addition of RE and extrusion deformation can refine the grain size. Al3La compounds are formed with addition of La-rich misch metal. The as-extruded Mg-14Li-3Al-0.6RE alloy obtains the finest grain size (4.28 μm) and the highest mechanical properties (σb=222.75 MPa, δ=23.8%), which is related to the grain refinement and the formation of Al3La.

Experimental Study of Mechanical Properties of Electroformed Nanocrystalline Ni-Mn Alloys

2008 ◽  
Vol 375-376 ◽  
pp. 148-152
Author(s):  
Jian Ming Yang ◽  
Di Zhu
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Tensile Properties ◽  
Current Density ◽  
Average Current Density ◽  
Mean Grain Size ◽  
Average Current ◽  
Mn Content ◽  
The Mean ◽  
Deposition Current Density

In this paper, the measurements of microhardness and tensile properties are performed to the electroformed Ni-Mn alloys which the mean grain size is near to or less than 100nm. It is studied that the effect of average deposition current density on microhardness and tensile properties of the alloys and the effect of post-electroforming annealing on microhardness of the alloys. The results show that with the increment of average current density, microhardness and strength of the alloys increase and elongation decreases because of the increment of Mn content and the decrement of grain size of the alloys. Microhardness of the alloys are slightly improved after annealing.

scholarly journals Effect of Yttrium Oxide Dispersion on the Microstructure and Properties of Tungsten Heavy Alloys

2018 ◽  
Vol 68 (4) ◽  
pp. 406
Author(s):  
Prabhu Gnanasambandam ◽  
Arockia Kumar ◽  
Tapash Kumar Nandy
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Grain Size ◽  
Tensile Properties ◽  
Yttrium Oxide ◽  
Liquid Phase Sintering ◽  
Oxide Dispersion ◽  
Heavy Alloys ◽  
Tungsten Heavy Alloys ◽  
Ods Alloy

<p>Tungsten heavy alloys are considered as two phase composites with 88 to 97 wt% tungsten interspersed in a matrix of relatively low melting elements such as nickel, iron and cobalt. The mechanical properties of these alloys are greatly influenced by the microstructural features such as tungsten grain size, tungsten-tungsten contiguity and matrix volume fraction. Oxide dispersion strengthening (ODS), refinement of tungsten grain size, cyclic heat treatment, addition of alloying elements like Cr, Mo, and Co are some of the methods investigated to improve the microstructural features and thereby the mechanical properties of tungsten heavy alloys. Among these methods ODS has been considered as a promising processing technique since the tungsten grain size observed in ODS alloys is finer compared to the conventional alloys and more importantly the dynamic fracture mode changes from adiabatic shear band to brittle fracture. The present study is mainly focused on investigating the effect of 0.3 wt% yttrium oxide (Y2O3) dispersion on the microstructure and consequently the tensile properties of 90W-6Ni-2Fe-2Co alloy. With 0.3 wt%Y2O3, the ODS alloy (89.7W-6Ni-2Fe-2Co-0.3Y2O3) is processed by two-stage sintering with subsequent thermo-mechanical treatment which includes vacuum heat treatment and swaging. ODS alloy and the conventional alloy (without oxides) are compared based on the microstructures and tensile properties obtained after liquid phase sintering and after final processing.</p>

VDM 601

Alloy Digest ◽  
2021 ◽  
Vol 70 (4) ◽  
Keyword(s):  
Grain Size ◽  
Corrosion Resistance ◽  
Physical Properties ◽  
Carbon Content ◽  
Tensile Properties ◽  
Iron Alloy ◽  
Heat Treating ◽  
Coarse Grain ◽  
Nickel Chromium ◽  
Rupture Properties

Abstract VDM 601 (Nicrofer 6023 H) is a nickel-chromium-iron alloy with additions of aluminum and titanium. This alloy is specifically recommended for service above 550 °C (1020 °F) because of its superior creep-rupture properties resulting from its controlled carbon content and coarse grain size. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as heat treating, machining, and joining. Filing Code: Ni-769. Producer or source: VDM Metals GmbH.

The Effect of Mixed RE Elements on Microstructure and Mechanical Properties of Die-Cast AZ91D Alloy

2014 ◽  
Vol 941-944 ◽  
pp. 59-65
Author(s):  
Jia Wei Yuan ◽  
Xing Gang Li ◽  
Kui Zhang ◽  
Yong Jun Li ◽  
Ming Long Ma ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Tensile Properties ◽  
Room Temperature ◽  
Az91d Alloy ◽  
Microstructure And Mechanical Properties ◽  
Die Cast ◽  
Fracture Behaviors ◽  
Re Elements

The effect of mixed RE elements (Y, Nd, Gd ) on the microstructure and tensile properties of die-cast AZ91D alloy were investigated. The results indicated that the content of mixed RE elements lead to the change of the formation of Al▔RE compounds and reduction of the fraction of β-Mg17Al12 phase. The grain size of the alloy added 1.0wt. % RE became smaller than die-cast AZ91D and AZ91D+2.0wt. % RE alloys. The UTS of die-cast AZ91D+xRE(x=0 wt. %, 1.0wt. %, 2.0 wt. %) alloys were 204MPa, 194MPa, 203.6MPa at room temperature, respectively. Moreover, RE addition resulted in fracture behaviors changed.

scholarly journals Grain Structure Evolution and Mechanical Properties of Multi-Channel Spiral Twist Extruded AA5083

Metals ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1276
Author(s):  
Dina M. Fouad ◽  
Waleed H. El-Garaihy ◽  
Mohamed M. Z. Ahmed ◽  
Ibrahim Albaijan ◽  
Mohamed M. El-Sayed Seleman ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Grain Boundaries ◽  
Tensile Properties ◽  
Grain Refinement ◽  
Electron Backscatter Diffraction ◽  
Comprehensive Evaluation ◽  
Structural Evolution ◽  
Grain Structure ◽  
Structure Evolution

This study presents a comprehensive evaluation of the effects of multi-channel spiral twist extrusion (MCSTE) processing on the mechanical properties and structural evolution of AA5083. The structural evolution and texture developed were mapped by electron backscatter diffraction (EBSD) for three successive passes and compared with an as-annealed plate. An evaluation of the hardness and tensile properties was presented and correlated with the EBSD findings. The displayed EBSD results revealed that grain refinement was strongly associated with the presence of a high density of low-angle grain boundaries (LAGBs) after one pass, which developed into fine grains of less than 20 μm and high-angle grain boundaries (HAGBs) after three MCSTE passes. The three pass processing led to a 65% reduction in grain size. This reduction in grain size was coupled with an enhancement in the hardness and tensile properties. Additionally, the crystallographic texture study represented a slightly random texture due to the presence of intermetallic particles in AA5083. This study demonstrates the efficacy of MCSTE as a grain refinement tool.

scholarly journals Effects of Sc and Zr Addition on Microstructure and Mechanical Properties of AA5182

Materials ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 4753
Author(s):  
Jingxiao Li ◽  
Xiaofang Yang ◽  
Shihua Xiang ◽  
Yongfa Zhang ◽  
Jie Shi ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Grain Boundary ◽  
Tensile Properties ◽  
Isothermal Annealing ◽  
Zr Addition ◽  
Microstructure And Mechanical Properties ◽  
Alloy Microstructure ◽  
Zr Alloy ◽  
Grain Boundary Strengthening

The effects of 0.1 wt.% Sc and 0.1 wt.% Zr addition in AA5182 on microstructure and mechanical properties were investigated. Results show that Al3(ScxZr1−x) dispersoids formed in AA5182. Observation of ingots microstructures showed that the grain size of 5182-Sc-Zr alloy was 56% lower than that of based AA5182. Isothermal annealing between 230 °C and 500 °C for 2 h was performed to study the recrystallization, tensile properties and dispersoid coarsening. The recrystallization was inhibited by the dispersoids, and the alloy microstructure remained deformed after annealing. Al3(ScxZr1−x) in AA5182 was stable when annealing below 400 °C, while parts of dispersoids coarsened significantly when heating at 500 °C. The addition of Sc and Zr allowed YS of 5182 alloy to achieve 247.8 MPa, which is 100 MPa higher than the corresponding AA5182. The contributions of Orowan strengthening and grain boundary strengthening were obtained by calculation.

Mechanical properties of AZ31 Mg alloy recycled by severe deformation

2006 ◽  
Vol 21 (3) ◽  
pp. 754-760 ◽  
Author(s):  
Yasumasa Chino ◽  
Tetsuji Hoshika ◽  
Jae-Seol Lee ◽  
Mamoru Mabuchi
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Tensile Strength ◽  
Tensile Properties ◽  
Yield Stress ◽  
Tensile Tests ◽  
Extrusion Ratio ◽  
Az31 Mg Alloy ◽  
Reference Specimens ◽  
High Extrusion Ratio

AZ31 Mg machined chips were recycled by extrusion at 673 K with a low extrusion ratio of 45:1 and a high extrusion ratio of 1600:1. Oxide contaminants were dispersed more uniformly in the recycled specimen with the high extrusion ratio than in that with the low extrusion ratio. In tensile tests, the recycled specimens with the high extrusion ratio showed about 50% higher 0.2% yield stress and about 20% higher tensile strength compared with those of the reference specimens, which were the extruded AZ31 Mg blocks under the same conditions as the recycled specimens. The improvement of the tensile properties was attributed not only to the small grain size, but also to the dispersed oxide contaminants.

Effect of Gd on the Microstructure and Mechanical Properties of Mg-Sn-Zn-Al Alloy

2013 ◽  
Vol 312 ◽  
pp. 411-414 ◽  
Author(s):  
C.F. Fang ◽  
L.G. Meng ◽  
Y.F. Wu ◽  
L.H. Wang ◽  
X.G. Zhang
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Tensile Strength ◽  
Ultimate Tensile Strength ◽  
Tensile Properties ◽  
Al Alloy ◽  
Lattice Constants ◽  
Microstructure And Mechanical Properties ◽  
Microstructures And Mechanical Properties

The effect of Gd addition on the microstructures and mechanical properties of Mg-5Sn-Zn-Al alloy was investigated with variations of Gd contents. These results show that adding Gd can effectively refine the grain size and growth. In addition, the solubility of Gd increases the lattice constants ofα-Mg phase. Accordingly, the tensile properties of the as-cast Mg-5Sn-Zn-Al alloy are improved by the addition of Gd. The Mg-5Sn-Zn-Al-0.4Gd exhibits the highest tensile properties, and the values of the yield and ultimate tensile strength and elongation are 111 MPa, 188 MPa and 18.0%, respectively.

Sign in / Sign up

Export Citation Format

Share Document