Ultrasonic fatigue performance of high temperature structural material Inconel 718 alloys at high temperature after UNSM treatment

2015 ◽  
Vol 38 (11) ◽  
pp. 1266-1273 ◽  
Author(s):  
A. Amanov ◽  
Y.-S. Pyun ◽  
J.-H. Kim ◽  
C.-M. Suh ◽  
I.-S. Cho ◽  
...  
Keyword(s):  
High Temperature ◽  
Structural Material ◽  
Inconel 718 ◽  
Fatigue Performance ◽  
Ultrasonic Fatigue ◽  
High Temperature Structural Material

Defects in molybdenum disilicide

1992 ◽  
Vol 50 (1) ◽  
pp. 170-171
Author(s):  
T.E. Mitchell ◽  
S. R. Srinivasan ◽  
R. B. Schwarz
Keyword(s):  
Crystal Structure ◽  
High Temperature ◽  
Structural Material ◽  
Integrated Circuits ◽  
Mechanical Alloying ◽  
Hot Pressing ◽  
Molybdenum Disilicide ◽  
Electrical Conductor ◽  
Group 14 ◽  
High Temperature Structural Material

INTRODUCTION. Molybdenum disilicide(MoSi2) is used mainly as an electrical conductor in integrated circuits and as a heating element in furnaces. It is now being studied as a potential high temperature structural material because of its good strength and oxidation resistance. MoSi2 has the tetragonal Cllb crystal structure, space group 14/mmm, with a=3.202Å and c=7.85lÅ. At temperatures >1900°C, MoSi2 has the hexagonal C40 structure where the basal planes have ABC stacking. This compares with the AB stacking of the pseudo-hexagonal {110} planes of the tetragonal structure. In the present paper we will describe and discuss TEM observations of defects in MoSi2 prepared variously by hot pressing, plasma spraying and mechanical alloying.

Dislocation decomposition and dissociation in molybdenum disilicide

1993 ◽  
Vol 51 ◽  
pp. 912-913
Author(s):  
S. A. Maloy ◽  
J. J. Petrovic ◽  
T. E. Mitchell
Keyword(s):  
Crystal Structure ◽  
High Temperature ◽  
Structural Material ◽  
Plastic Strain ◽  
Molybdenum Disilicide ◽  
Slip Systems ◽  
Compression Axis ◽  
Hexagonal Symmetry ◽  
Burgers Vector ◽  
High Temperature Structural Material

Molybdenum disilicide(MoSi2) is being investigated as a potential high temperature structural material. It has the tetragonal C11b crystal structure, space group I4/mmm, with a=3.204Å and c=7.848Å. The shortest Burgers vector is <100> and such dislocations are commonly observed. The {110} planes have pseudo-hexagonal symmetry and so the next larger Burgers vectors, 1/2<111> and <110>, both have b = 4.531Å, followed by 1/2<331> and <001> both with b = 7.848Å. The easiest slip systems are {011}<100> and {110}l/2<111>. These have zero Schmid factors for crystals deformed along [001], forcing other systems such as {103}l/2<331> into operation. Here we will describe and discuss TEM observations of dislocations produced in Czochralski-grown MoSi2 single crystals by deformation along the [001] compression axis at temperatures from 1000 to 1500°C.Specimens tested at 1000°C yielded in a series of load drops starting at a stress of 680MPa and continuing to 1400MPa (the limit of the machine) when the plastic strain was 0.3%.

AISI TYPE 405

Alloy Digest ◽  
1988 ◽  
Vol 37 (4) ◽  
Keyword(s):  
Corrosion Resistance ◽  
High Temperature ◽  
Structural Material ◽  
Physical Properties ◽  
Tensile Properties ◽  
Heat Treating ◽  
Steel Mills ◽  
Temperature Performance ◽  
Continuous Service ◽  
Aisi Type

Abstract AISI Type 405 has marginal stainless corrosion resistance. It is used primarily as a structural material. It is serviceable in continuous service up to 1300 F and in intermittent exposures up to 1500 F. It does not harden appreciably when air cooled from high temperatures where some austenite may exist. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-129. Producer or source: Alloy steel mills and foundries. Originally published March 1962, revised April 1988.

REPUBLIC RS-110A

Alloy Digest ◽  
1963 ◽  
Vol 12 (6) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Titanium Alloy ◽  
Shear Strength ◽  
High Temperature ◽  
Structural Material ◽  
Physical Properties ◽  
Heat Treating ◽  
Alloying Element ◽  
Temperature Performance ◽  
Medium Strength

Abstract Republic RS-110A is a titanium alloy containing manganese as its principle alloying element. The alloy is a medium strength, highly formable sheet alloy which has been used extensively as an aircraft structural material. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and shear strength. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: Ti-35. Producer or source: Republic Steel Corporation, Titanium Division.

High temperature mechanical properties of Inconel 718 pulsed Nd–YAG laser welds

2006 ◽  
Vol 23 (1) ◽  
pp. 29-37 ◽  
Author(s):  
G.D. Janaki Ram ◽  
A. Venugopal Reddy ◽  
K. Prasad Rao ◽  
G. Madhusudhan Reddy
Keyword(s):  
Mechanical Properties ◽  
High Temperature ◽  
Inconel 718 ◽  
Yag Laser ◽  
High Temperature Mechanical Properties ◽  
Laser Welds
Sign in / Sign up

Export Citation Format

Share Document