Effects of Laser Shock Processing on Impact Toughness of Ti-17 Titanium Alloy

Huang, Shuai; Zhu, Ying; Guo, Wei; Peng, Peng; Diao, Xungang

doi:10.1515/htmp-2016-0106

Cited by 3 publications

(1 citation statement)

References 31 publications

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“…When producing high-loaded details, one of the problems is the presence of surface tensile stresses (Gnyusov et al, 2017;Hou et al, 2018). They can substantially reduce the mechanical, resource, and fatigue characteristics of products (Wojtaszek et al, 2016;Sakhvadze et al, 2017;Pei & Duan, 2017;Huang et al, 2018). The residual stresses exist in products in the absence of external actions.…”

Section: Introductionmentioning

confidence: 99%

Methods for Hardening and Improvement of Fatigue Characteristics of Titanium and Iron-Chromium Nickel Alloy Samples

Скворцов¹,

Gnatyuk²,

Rybakova³

et al. 2020

PTQ

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This work describes the procedure for determining residual surface stresses using the mechanical method and four methods of hardening samples. The urgency of the problem stated in the article is due to the fact that surface tensile stresses arising in the manufacture of highly loaded parts can significantly reduce the mechanical, resource and fatigue characteristics of products. The aim of the study was to harden samples of titanium and iron-chromium-nickel alloys to improve their strength, fatigue and resource characteristics and determine residual stresses by layer-by-layer removal of the studied layers by electrochemical etching. The determination of surface residual stresses was carried out mechanically using a measuring and calculation complex during continuous etching of the metal from the test surface of the sample, which made it possible to measure the residual stresses at different depths and determine the energy of the surface stress state. Residual stresses were calculated from the deformation of the remaining part of the sample with a change in the depth of the studied layers. The hardening of the samples was carried out in four ways, namely: ultrasonic hardening; ultrasonic curing + Rosler (vibration processing); Rosler (vibration processing) + ultrasonic curing; Rosler (vibration processing) + ultrasonic hardening. The results of the study showed that the surface of the products is a weaker area than the inside. After quenching, surface compressive stresses arise for all samples of titanium and iron-chromium-nickel alloys. The preferred case of hardening is the second (ultrasonic hardening + centrifugal hardening). The presence of residual compressive stresses in the outer layers of the products increases their fatigue limit by ≈20%. The results of the work can be used to manufacture products with high mechanical, resource and fatigue characteristics.

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Section: Introductionmentioning

confidence: 99%

Methods for Hardening and Improvement of Fatigue Characteristics of Titanium and Iron-Chromium Nickel Alloy Samples

Скворцов¹,

Gnatyuk²,

Rybakova³

et al. 2020

PTQ

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Precision Modification of Microstructure and Properties Through Laser Engraving

Small

McCue

Johnston³

et al. 2021

JOM

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Mechanical Properties of Titanium Grade 1 After Laser Shock Wave Treatment

Hutsaylyuk,

Wachowski,

Kovalyuk

et al. 2023

Advances in Materials Science

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In the presented work the impact of a laser shock wave on the mechanical properties of a Titanium Grade 1 was investigated. Based on a series of experimental studies related to the impact of the laser shock wave on the tested material, the impact of the given treatment on the structure and mechanical properties was assessed. The influence of the environment on the distribution of plasma temperature and pressure in the material during the implementation of the laser shock wave was analyzed. The effect of the laser treatment on the structure and micromechanical properties was initially estimated on the basis of the analysis of experimental results in the form of static strength test of samples after laser treatment. A slight increase in material strength was detected with a minimal decrease in ductility. In order to comprehensively understand the observed phenomenon, a number of fractographic tests were performed, especially the analysis of the porosity of the fracture surfaces. A decrease in the porosity of the material after impact laser treatment was observed as a result of local plastic deformation.

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Effects of Laser Shock Processing on Impact Toughness of Ti-17 Titanium Alloy

Cited by 3 publications

References 31 publications

Methods for Hardening and Improvement of Fatigue Characteristics of Titanium and Iron-Chromium Nickel Alloy Samples

Methods for Hardening and Improvement of Fatigue Characteristics of Titanium and Iron-Chromium Nickel Alloy Samples

Precision Modification of Microstructure and Properties Through Laser Engraving

Mechanical Properties of Titanium Grade 1 After Laser Shock Wave Treatment

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