scholarly journals Mechanical and Thermal Fatigue Property of Sn Base Solder Alloys.

2000 ◽  
Vol 3 (7) ◽  
pp. 592-599 ◽  
Author(s):  
Masataka NISHIURA
Keyword(s):  
Thermal Fatigue ◽  
Fatigue Property ◽  
Solder Alloys

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.

scholarly journals Correlation of microstructure and thermal fatigue property of three work rolls

1997 ◽  
Vol 28 (12) ◽  
pp. 2595-2608 ◽  
Author(s):  
Sunghak Lee ◽  
Do Hyung Kim ◽  
Jae Hwa Ryu ◽  
Keesam Shin
Keyword(s):  
Thermal Fatigue ◽  
Fatigue Property ◽  
Work Rolls

Study on the Thermal Fatigue Resistance of Cr17Mn10Ni3 Heat-Resistant Steel

2011 ◽  
Vol 194-196 ◽  
pp. 1326-1332
Author(s):  
Jun You Liu ◽  
Jie Liu ◽  
Qing he Zhao ◽  
Jin Xiu Song
Keyword(s):  
Thermal Fatigue ◽  
Strain Energy ◽  
Room Temperature ◽  
Elastic Strain Energy ◽  
Fatigue Property ◽  
Water Cooling ◽  
High Concentration ◽  
Heat Resistant Steel ◽  
Metallurgical Structure ◽  
Temperature Water

In order to prolong the life of inner liner of coke can, the thermal fatigue property of Cr17Mn10Ni3 heat-resisting steel was analyzed and studied from cast metallurgical structure, the morphology of crack surface and cross-section, the injury factor by OM, SEM, photoshop and imagetool software. The results shows, Cr17Mn10Ni3 has a good thermal fatigue property because of the microstructure with good thermal conductivity, austenite matrix and break carbide lying in treelike crystals. It decreases the innerstress and postpones the time of crack formation and extension, during the process with 1100°C and room- temperature water cooling. The cracks mainly appear in the phase interfaces between carbides and matrix, ferrite and austenite, and grain boundaries. The thin and deep cracks with high concentration are beneficial to relax the elastic strain energy. But a single and thick crack easily widens and deepens to be detrimental to the thermal fatigue property.

Influence of microstructures on thermal fatigue property of a nickel-base superalloy

2015 ◽  
Vol 9 (1) ◽  
pp. 85-92 ◽  
Author(s):  
Peng-Cheng Xia ◽  
Feng-Wen Chen ◽  
Kun Xie ◽  
Ling Qiao ◽  
Jin-Jiang Yu
Keyword(s):  
Thermal Fatigue ◽  
Fatigue Property ◽  
Nickel Base Superalloy ◽  
Nickel Base ◽  
Base Superalloy

Study on the Influence of High Temperature Homogenizing and Solution on the Microstructure and Property of 4Cr5MoSiV1 Steel

2012 ◽  
Vol 549 ◽  
pp. 567-571
Author(s):  
Luo Yi
Keyword(s):  
High Temperature ◽  
Chemical Composition ◽  
Impact Toughness ◽  
Thermal Fatigue ◽  
Fatigue Behavior ◽  
Fatigue Property ◽  
Eutectic Carbides ◽  
The Core ◽  
Thermal Fatigue Behavior ◽  
The Impact

4Cr5MoSiV1 steel, a widely used for hot work mould, contains Cr, Mo, V alloying elements that easily form carbides. The Micro-area chemical composition, microstructure, impact toughness and thermal fatigue behavior of 4Cr5MoSiV1 and 4Cr5MoSiV1H steels were investigated, the latter was carried on high temperature homogenizing and solution based on the former. The results showed that bulk eutectic carbides and elements segregation contained in the 4Cr5MoSiV1 steel reduced the impact toughness. But the impact toughness of the core of the mould steel block and thermal fatigue property of 4Cr5MoSiV1H steel were improved because the elements segregation and eutectic carbides was eliminated through the high temperature homogenizing and solution.

Effects of Graphite Shape on Thermal Fatigue Property of Thin Wall Graphitic Cast Irons

2010 ◽  
Vol 457 ◽  
pp. 398-403 ◽  
Author(s):  
Yung Ning Pan ◽  
Chen Chi Fan ◽  
Chih Hung Chang
Keyword(s):  
Thin Section ◽  
Thermal Fatigue ◽  
Fatigue Property ◽  
Spheroidal Graphite ◽  
Thin Wall ◽  
Flake Graphite ◽  
Cast Irons ◽  
Thin Sections ◽  
Compacted Graphite ◽  
Graphite Structure

The optimal alloy design and microstructure for the high temperature (around 800oC) constrained cyclic thermal fatigue applications in thin-section ductile irons have been established previously by the authors. This study intends to investigate the effect of graphite morphology on the thermal fatigue property of thin-section (2mm ~ 6mm) graphitic cast irons. The results show that to produce carbide-free spheroidal graphite irons in relatively thin sections of 2-mm or 3-mm in the as cast conditions is feasible. However, for compacted graphite cast irons, graphite particles largely in nodular form always occurs in rather thin sections, and acceptable compacted graphite structure can only be obtained when the section thickness exceeds about 6-mm. Regarding the constrained cyclic thermal fatigue property (20 ~ 800oC), cast irons with spheroidal graphite exhibit the best thermal fatigue life, which is followed by irons with compacted graphite, and then flake graphite cast irons, even though flake graphite cast irons show least swelling or distortion after cyclic thermal fatigue test. Furthermore, adding some 0.5%Mo to the irons significantly improves the thermal fatigue property, in some cases even by a factor of 2, implying that the role of Mo outweighs the influence of graphite structure in promoting thermal fatigue property.

Thermal Fatigue and Failure Analysis of SnAgCu Solder Alloys With Minor Pb Additions

2011 ◽  
Vol 1 (10) ◽  
pp. 1594-1600 ◽  
Author(s):  
Maurice N. Collins ◽  
Jeff Punch ◽  
Richard Coyle ◽  
Michael Reid ◽  
Richard Popowich ◽  
...  
Keyword(s):  
Failure Analysis ◽  
Thermal Fatigue ◽  
Solder Alloys ◽  
Snagcu Solder
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