Some Thermal Fatigue Characteristics of Mild Steel for Heat Exchangers

2009 ◽  
pp. 141-141-16 ◽  
Author(s):  
JS Laub
Keyword(s):  
Mild Steel ◽  
Thermal Fatigue ◽  
Heat Exchangers ◽  
Fatigue Characteristics

Thermal Fatigue Characteristics of Heat-Resisting Stainless Steel for Automotive Exhaust

2007 ◽  
Vol 539-543 ◽  
pp. 4944-4949 ◽  
Author(s):  
Tae Kwon Ha ◽  
Hwan Jin Sung
Keyword(s):  
Thermal Fatigue ◽  
Stainless Steels ◽  
Fatigue Property ◽  
Fatigue Tests ◽  
Fatigue Properties ◽  
Automotive Exhaust ◽  
Load Relaxation ◽  
Temperature Ranges ◽  
Fatigue Characteristics ◽  
Efficiency And Reliability

Thermal fatigue is a complex phenomenon encountered in materials exposed to cyclically varying temperatures in the presence or absence of external load. Continually increasing working temperature and growing need for greater efficiency and reliability of automotive exhaust require immediate investigation into the thermal fatigue properties especially of high temperature stainless steels. In this study, thermal fatigue properties of 304 and 429EM stainless steels have been evaluated in the temperature ranges of 200-800oC and 200-900oC. Systematic methods for control of temperatures within the predetermined range and measurement of load applied to specimens as a function of temperature during thermal cycles have been established. Thermal fatigue tests were conducted under fully constrained condition, where both ends of specimens were completely fixed. Thermal fatigue property of STS 304 was superior to that of STS 429EM. Load relaxation behavior at the temperatures of thermal cycle was closely related with the thermal fatigue property.

Thermal Fatigue Characteristics of Die Attach Materials for Packaged High-Brightness LEDs

2012 ◽  
Vol 2 (8) ◽  
pp. 1346-1350 ◽  
Author(s):  
Guangchen Zhang ◽  
Shiwei Feng ◽  
Zhou Zhou ◽  
Jing Liu ◽  
Jingwan Li ◽  
...  
Keyword(s):  
Thermal Fatigue ◽  
High Brightness ◽  
Die Attach ◽  
Fatigue Characteristics

Finite Element Analysis on the Ability of Solder Joints to Resist Thermal Fatigue

2010 ◽  
Vol 118-120 ◽  
pp. 738-742
Author(s):  
Xue Xia Yang ◽  
Yu Zhang ◽  
Xue Feng Shu
Keyword(s):  
Finite Element ◽  
Thermal Fatigue ◽  
Solder Joints ◽  
Strain Response ◽  
Shape Parameters ◽  
Element Analysis ◽  
Finite Element Software ◽  
Plastic Ball ◽  
Plastic Ball Grid Array ◽  
Fatigue Characteristics

The purpose of this paper is to study the ability of solder joints to resist thermal fatigue. 2D simplified models of Plastic Ball Grid Array package (PBGA) structures with ten different solder joints obtained from surface mount experiment are established by finite element software, then stress-strain response of solder joints subjected to the thermal cycle load are calculated. And the effects of shape parameters of solder joints on the ability to resist thermal fatigue are discussed. Results indicate that for the same material and volume solders, the solder joints which have higher height, smaller diameter and contact angle have a stronger ability against thermal fatigue, and that the thermal fatigue characteristics are also greatly influenced by the solder outlines. Comparing with SP solder joints, LF solder joints have stronger ability against thermal fatigue.

Thermal Fatigue Characteristics of Pta Hardfaced Steels

2001 ◽  
Vol 17 (6) ◽  
pp. 498-504 ◽  
Author(s):  
S.H. Kang ◽  
T. Shinoda ◽  
Y. Kato ◽  
H.S. Jeong
Keyword(s):  
Thermal Fatigue ◽  
Fatigue Characteristics

THERMOLD 75

Alloy Digest ◽  
1967 ◽  
Vol 16 (9) ◽  
Keyword(s):  
Fracture Toughness ◽  
High Temperature ◽  
Physical Properties ◽  
Tensile Properties ◽  
Thermal Fatigue ◽  
Die Casting ◽  
Heat Treating ◽  
Extrusion Dies ◽  
Temperature Performance ◽  
Fatigue Characteristics

Abstract Thermold 75 is a chromium-molybdenum-cobalt hot work steel that has outstanding resistance to softening when tempering, and also very good thermal fatigue characteristics. It is recommended for aluminum die casting dies, forging dies and extrusion dies. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness and creep. It also includes information on high temperature performance as well as forming, heat treating, machining, and joining. Filing Code: TS-197. Producer or source: Cyclops Corporation.

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