Effect of laser shock processing with post-machining and deep cryogenic treatment on fatigue life of GH4169 super alloy

Abstract To achieve better fatigue behavior for super alloy GH4169 parts, residual compressive stresses in surface layers were expected by machining or other manufacturing method. Both laser shock processing (LSP) and deep cryogenic treatment (DCT) were thought as residual stress improvement methods, but their influences on fatigue life were still inexplicit and need further investigation. Four groups of standard specimens are manufactured to study their residual stresses distribution and micro structure of their surfaces on fatigue behavior. To avoid LSP’s disadvantage in application, a hybrid manufacturing method of laser shock processing with post-machining (LSPM) was proposed. Results shows that fatigue life for specimens increased more than twofold after LSPM, whereas DCT brought reductions in fatigue life.

[1]  Xian‐Cheng Zhang,et al.  Effects of low-temperature transformation and transformation-induced plasticity on weld residual stresses: Numerical study and neutron diffraction measurement , 2018, Materials & Design.

[2]  N. Qu,et al.  Investigation of material removal in inner-jet electrochemical grinding of GH4169 alloy , 2017, Scientific Reports.

[3]  I. Uygur,et al.  Effects of Deep Cryogenic Treatment on the Wear Resistance and Mechanical Properties of AISI H13 Hot-Work Tool Steel , 2015, Journal of Materials Engineering and Performance.

[4]  Sun Guifang,et al.  A finite element analysis of thermal relaxation of residual stress in laser shock processing Ni-based alloy GH4169 , 2014 .

[5]  Yang Yang,et al.  Microstructure characteristics and formation mechanism of TC17 titanium alloy induced by laser shock processing , 2017 .

[6]  J. Knott,et al.  Effects of compressive residual stress on short fatigue crack growth in a nickel-based superalloy , 2018 .

[7]  Y. Mai,et al.  Laser shock processing and its effects on microstructure and properties of metal alloys: a review , 2002 .

[8]  G. Farrahi,et al.  Effect of initial surface treatment on shot peening residual stress field: Analytical approach with experimental verification , 2018 .

[9]  D. Karthik,et al.  Laser shock peening enhanced corrosion properties in a nickel based Inconel 600 superalloy , 2017 .

[10]  Junsong Zhang,et al.  Improving the high temperature oxidation resistance of Ni-based superalloy GH202 induced by laser shock processing , 2017 .

[11]  Mao Yang,et al.  Effects of deep cryogenic treatment on microstructural evolution and alloy phases precipitation of a new low carbon martensitic stainless bearing steel during aging , 2018, Materials Science and Engineering: A.

[12]  D. Qian,et al.  Effect of laser shock peening on residual stress, microstructure and fatigue behavior of ATI 718Plus alloy , 2017 .

[13]  Jianzhong Zhou,et al.  Effects of cryogenic treatment on mechanical properties and micro-structures of IN718 super-alloy , 2017 .

[14]  Xilin Yuan,et al.  An engineering high cycle fatigue strength prediction model for low plasticity burnished samples , 2017 .

[15]  Harry Edward Coules,et al.  The effects of residual stress on elastic-plastic fracture propagation and stability , 2018 .

[16]  Zhanqiang Liu,et al.  Enhancing surface integrity and corrosion resistance of laser cladded Cr–Ni alloys by hard turning and low plasticity burnishing , 2017 .

[17]  Staffan Jacobson,et al.  Deep cryogenic treatment of tool steels , 2016 .

[18]  Jianfei Sun,et al.  Effect of Machining Parameters on Surface Integrity in High Speed Milling of Super Alloy GH4169/Inconel 718 , 2016 .

[19]  S. D. Xu,et al.  Laser shock processing on Ni-based superalloy K417 and its effect on thermal relaxation of residual stress , 2017 .

[20]  Liucheng Zhou,et al.  Improvement of high-temperature fatigue performance in the nickel-based alloy by LSP-induced surface nanocrystallization , 2018 .

[21]  Hyung Jin Lim,et al.  Data-driven fatigue crack quantification and prognosis using nonlinear ultrasonic modulation , 2018, Mechanical Systems and Signal Processing.

[22]  Y. Zhang,et al.  Effect of laser shock processing on the fatigue crack initiation and propagation of 7050-T7451 aluminum alloy , 2011 .