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analyzed and dislocation configurations were also observed by TEM. The mechanisms of cyclic hardening or softening during thermo-mechanical fatigue (TMF) tests were also discussed. Results showed... was zero asymmetry and the other was tensile and compressive asymmetry. Dislocations configuration and slip behaviors were contributed to cyclic hardening or cyclic softening. Key words: titanium......
obviously cyclic strain-hardening characteristics during fatigue at strain magnitudes of 0.7%, 0.9%, 1.3% and 1.5%. At the strain of magnitude 0.5%, the alloy exhibits a cyclic hardening characteristic... mechanisms. Key words: AZ31B magnesium alloy; twinning; dislocation slip; hysteresis loop; cyclic hardening 1 Introduction Because of their extremely low density in combination with their good castability......
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Cooling Curve''s Effect on Hardening Behavior of Steel Shigeru Asada1,Kazuto Fukuhara1,Syusaku Maeda1,Yoshihiro Tomita1 (1.Nippon Grease Co., Ltd. Osaka, Japan) 摘要:Quenching Oils are comprised... curve(1), it is possible to provide higher quench hardening performance using quenching oil formulated of adequate additives. 关键词:Quenching Oil; Cooling performance; Additive; Hardening performance......
properties. Among the more important of these treatments are heat treatment processes such as hardening by Quenching, Induction hardening and Case Carburizing which rely on phase transformations to produce... transformations (Machining) of low carbon steels. 关键词:Normalizing; Turn hardening; grind hardening; quality; specific energy; energy partition ratio; [全文内容正在添加中] ......
Effects of laser phase transformation hardening parameters on heat input and hardened-bead profile quality of unalloyed titanium D. S. BADKAR1, K. S. PANDEY1, G. BUVANASHEKARAN2 1... Received 13 July 2009; accepted 4 January 2010 Abstract: Laser transformation hardening (LTH) of unalloyed titanium of 1.6 mm-thick sheet, nearer to ASTM Grade 3 of chemical composition was investigated......
of cast A356 alloys at room temperature were investigated, and the morphologies of fracture surfaces were analysed. The results show that four kinds of A356 alloys exhibit the evident cyclic hardening behavior, and the A356 alloys with 0.14%Ti(mass fraction) exhibit higher cyclic hardening rate than the alloys with 0.1%Ti. The cyclic hardening behavior influenced by method of Ti-alloying has similar......
-amplitude cyclic test is the smallest, meaning that the high-amplitude load weakens the deformation resistance of pillar system, whereas pre-cyclic load with lower amplitude has hardening effect. The axial... J. Cent. South Univ. (2020) 27: 542-553 DOI: https://doi.org/10.1007/s11771-020-4315-0 Bearing characteristics and fatigue damage mechanism of multi-pillar system subjected to different cyclic......
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