Characterization of High Strength Alloy Formed by Ion Irradiation of Metallic Glasses

2007 ◽  
Vol 561-565 ◽  
pp. 1737-1740
Author(s):  
Jesse Carter ◽  
En Gang Fu ◽  
S.M. McDeavitt ◽  
Xing Hang Zhang ◽  
Guo Qiang Xie ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Metallic Glass ◽  
Metallic Glasses ◽  
Ion Irradiation ◽  
High Strength ◽  
Irradiation Effects ◽  
Strength Alloy

We have explored irradiation effects on metallic glasses by using 140 keV He ions. The mechanical properties of nanostructured metallic glass are studied by using microindentation. The study shows the feasibility of developing a high strength alloy by ion irradiation of metallic glasses.

Characterization of High Strength Alloy Formed by Ion Irradiation of Metallic Glasses

2007 ◽  
pp. 1737-1740
Author(s):  
Jesse Carter ◽  
En Gang Fu ◽  
S.M. McDeavitt ◽  
Xing Hang Zhang ◽  
Guo Qiang Xie ◽  
...  
Keyword(s):  
Metallic Glasses ◽  
Ion Irradiation ◽  
High Strength ◽  
Strength Alloy

scholarly journals Self-ion irradiation effects on mechanical properties of nanocrystalline zirconium films

2017 ◽  
Vol 7 (3) ◽  
pp. 595-600 ◽  
Author(s):  
Baoming Wang ◽  
M. A. Haque ◽  
Vikas Tomar ◽  
Khalid Hattar
Keyword(s):  
Mechanical Properties ◽  
Ion Irradiation ◽  
Irradiation Effects ◽  
Image Position

Abstract

Formation of High-Strength Zr-Nb-Cu-Ni-Al Alloys by Warm Extrusion of Gas Atomized Powders

2003 ◽  
Vol 806 ◽  
Author(s):  
E. A. Rozhkova ◽  
X. Y. Yang ◽  
P. B. Wheelock ◽  
J. Eckert ◽  
U. Kühn ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Metallic Glass ◽  
High Strength ◽  
Powder Particle Size ◽  
Gas Atomization ◽  
Ductile Phase ◽  
Cooling Rates ◽  
Glass Composites ◽  
Bcc Phase ◽  
Warm Extrusion

ABSTRACTRecently developed Zr-based metallic glass composites containing a ductile phase demonstrate improved mechanical properties such as high strength combined with good ductility compared to the glass monoliths. Zr-Nb-Cu-Ni-Al amorphous powders with bcc phase precipitates were obtained by high pressure gas atomization. Formation of the bcc phase in the amorphous matrix strongly depends on the material composition and cooling rates during solidification. Melt spinning using various wheel speeds selected to simulate the cooling rates during gas atomization was used to define a specific composition for gas atomization. Gas atomized powders were consolidated by warm extrusion. Various processing conditions including starting powder particle size, extrusion temperature and extrusion ratio were examined to obtain materials having various microstructural features. Structure and thermal stability of consolidated bulk metallic glass composites as well as selected mechanical properties will be discussed.

Effect of Microalloying Elements on Mechanical Properties in the High Strength Low Alloy Steel

2015 ◽  
Vol 830-831 ◽  
pp. 231-233 ◽  
Author(s):  
P.K. Mandal ◽  
Ravi Kant
Keyword(s):  
Mechanical Properties ◽  
Hsla Steel ◽  
High Strength ◽  
Microstructural Characterization ◽  
Strengthening Mechanism ◽  
Treatment Processes ◽  
Heating Treatment ◽  
Secondary Precipitates ◽  
Microalloying Elements

The effect of microalloying elements in Ti-Nb-V containing high strength low alloy (HSLA) steel has been investigated in the present study. The addition of low alloying elements (such as Ti, Nb and V) and distinct heating treatment processes has been used to improve the mechanical properties of HSLA steel. The effect on the microstructure and mechanical properties of normalizing treatment (at 950°C) of as forged steel has been investigated. The microstructural characterization of microalloyed HSLA steel is carried out by using different techniques such as optical microscopy, scanning electron microscopy (SEM) etc. The hardness, tensile testing and Charpy V notch impact tests are performed to study the mechanical behaviour of the alloy. It has been concluded that the precipitation strengthening mechanism for the improvement of impact toughness due to secondary precipitates such as TiN, Ti(C, N), VN etc.

Microstructure, thermal, and mechanical characterization of rapidly solidified high strength Fe84.3Cr4.3Mo4.6V2.2C4.6

2010 ◽  
Vol 25 (6) ◽  
pp. 1164-1171 ◽  
Author(s):  
A. Schlieter ◽  
U. Kühn ◽  
J. Eckert ◽  
H-J. Seifert
Keyword(s):  
Mechanical Properties ◽  
High Speed ◽  
High Speed Steel ◽  
High Strength ◽  
Cast State ◽  
High Fracture ◽  
Complex Carbides ◽  
Rapidly Solidified ◽  
Heating Up

Systematic microstructural and mechanical investigations of the Fe84.3Cr4.3Mo4.6V2.2C4.6 alloy cast under special manufacturing conditions in the as-cast state and after specific heat treatment are presented to point out that the special manufacturing of the alloy led to high compression strength (up to 4680 MPa) combined with large fracture strain (about 20%) already in the as-cast state. One select chemical composition of the alloy, which was mentioned previously [Kühn et al., Appl. Phys. Lett.90, 261901 (2007)] enhanced mechanical properties already in the as-cast state. Furthermore, that composition is comparable to commercial high-speed steel. By the special manufacturing used, a high purity of elements and a high cooling rate, which led to a microstructure similar to a composite-like material, composed of dendritic area (martensite, bainite, and ferrite) and interdendritic area (e.g., complex carbides). The presented article demonstrates an alloy that exhibits already in the as-cast state high fracture strength and large ductility. Furthermore, these outstanding mechanical properties remain unchanged after heating up to 873 K.

Phase Transformation Behavior and Mechanical Properties of Ti-Mo-Sn Alloys

2013 ◽  
Vol 747-748 ◽  
pp. 855-859
Author(s):  
Xiao Xue Chen ◽  
Shun Guo ◽  
Xin Qing Zhao
Keyword(s):  
Mechanical Properties ◽  
Cold Rolling ◽  
Cold Deformation ◽  
High Strength ◽  
Mechanical Tests ◽  
X Ray Diffraction ◽  
Superior Mechanical Properties ◽  
Low Modulus ◽  
Mo Content

A series of Ti-Mo-Sn alloys with different Mo contents from 7% to 15% (wt. %) were prepared, and the effects of Mo content and thermo-mechanical treatment on their microstructural evolution and mechanical behavior were investigated. The experimental results indicated that the β to α martensite transformation can be effectively suppressed with increasing Mo content. After cold rolling treatment, superior mechanical properties and low modulus were achieved in Ti-8Mo-4Sn alloy, with tensile strength of 1108MPa, yield strength of 1003MPa and low Youngs modulus of 53GPa. The influence of severe cold deformation on the macrostructure and mechanical properties was discussed based on the characterization of X-Ray diffraction and mechanical tests. It was demonstrated that the cold rolling induced fine α martensite and high density dislocations lead to the high strength of the Ti-Mo-Sn alloys. The fine α martensite as well as the β matrix with low stability guarantee low Youngs modulus.

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