Effect of diamond burnishing on the fatigue strength of steel 40KhNMA at elevated temperatures

1974 ◽  
Vol 16 (12) ◽  
pp. 1020-1022 ◽  
Author(s):  
V. K. Yatsenko ◽  
G. Z. Zaitsev
Keyword(s):  
Fatigue Strength ◽  
Elevated Temperatures ◽  
Steel 40Khnma ◽  
Diamond Burnishing

scholarly journals Application of a √ area -Approach for Fatigue Assessment of Cast Aluminum Alloys at Elevated Temperature

Metals ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 1033 ◽  
Author(s):  
Roman Aigner ◽  
Christian Garb ◽  
Martin Leitner ◽  
Michael Stoschka ◽  
Florian Grün
Keyword(s):  
Elevated Temperature ◽  
Fatigue Strength ◽  
Room Temperature ◽  
Elevated Temperatures ◽  
Damage Mechanism ◽  
Cyclic Fatigue ◽  
Fatigue Tests ◽  
Cast Aluminum ◽  
Fatigue Assessment ◽  
Cast Aluminum Alloys

This paper contributes to the effect of elevated temperature on the fatigue strength of common aluminum cast alloys EN AC-46200 and EN AC-45500. The examination covers both static as well as cyclic fatigue investigations to study the damage mechanism of the as-cast and post-heat-treated alloys. The investigated fracture surfaces suggest a change in crack origin at elevated temperature of 150 ∘ C. At room temperature, most fatigue tests reveal shrinkage-based micro pores as their crack initiation, whereas large slipping areas occur at elevated temperature. Finally, a modified a r e a -based fatigue strength model for elevated temperatures is proposed. The original a r e a model was developed by Murakami and uses the square root of the projected area of fatigue fracture-initiating defects to correlate with the fatigue strength at room temperature. The adopted concept reveals a proper fit for the fatigue assessment of cast Al-Si materials at elevated temperatures; in detail, the slope of the original model according to Murakami should be decreased at higher temperatures as the spatial extent of casting imperfections becomes less dominant at elevated temperatures. This goes along with the increased long crack threshold at higher operating temperature conditions.

scholarly journals Effect of Grain-size on Fatigue Strength of Low Carbon Steel at Elevated Temperatures

1978 ◽  
Vol 21 (152) ◽  
pp. 181-188 ◽  
Author(s):  
Norihiko HASEGAWA ◽  
Yozo KATO ◽  
Masaki NAKAJIMA
Keyword(s):  
Grain Size ◽  
Fatigue Strength ◽  
Carbon Steel ◽  
Elevated Temperatures ◽  
Low Carbon Steel ◽  
Low Carbon

OS1514 High-Cycle Fatigue Strength of Modified 9Cr-1Mo Steel at Elevated Temperatures

2013 ◽  
Vol 2013 (0) ◽  
pp. _OS1514-1_-_OS1514-3_
Author(s):  
Motoyuki OCHI ◽  
Ken SUZUKI ◽  
Isamu NONAKA ◽  
Hideo MIURA
Keyword(s):  
Fatigue Strength ◽  
High Cycle Fatigue ◽  
Elevated Temperatures ◽  
Cycle Fatigue

108 Dominant Factors of Fatigue Strength of Modified 9Cr-1Mo Steel at Elevated Temperatures

2013 ◽  
Vol 2013.49 (0) ◽  
pp. 15-16
Author(s):  
Motoki TAKAHASHI ◽  
Ken SUZUKI ◽  
Isamu NONAKA ◽  
Hideo MIURA
Keyword(s):  
Fatigue Strength ◽  
Elevated Temperatures

ALUMINUM A140

Alloy Digest ◽  
1969 ◽  
Vol 18 (6) ◽  
Keyword(s):  
Compressive Strength ◽  
High Temperature ◽  
Fatigue Strength ◽  
Physical Properties ◽  
Elevated Temperatures ◽  
Heat Treating ◽  
Casting Alloy ◽  
Temperature Performance ◽  
Aluminum Company ◽  
Engine Cylinder

Abstract Aluminum A-140 is a non-heat treatable casting alloy having high tensile and fatigue strength at elevated temperatures to 600 F. It is recommended for engine cylinder heads, aircraft and missile components. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive strength. It also includes information on high temperature performance as well as casting, heat treating, machining, and joining. Filing Code: Al-187. Producer or source: Aluminum Company of America.

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