Journal ArticleDOI
Grain refinement of LY2 aluminum alloy induced by ultra-high plastic strain during multiple laser shock processing impacts
J.Z. Lu,Kaiyu Luo,Y.K. Zhang,C.Y. Cui,Sun Guifang,Jun Zhou,Lai-Chang Zhang,J. You,K.M. Chen,J.W. Zhong +9 more
TLDR
In this article, the plastic deformation behavior and the effects of the impact time on the LY2 aluminum (Al) alloy during multiple laser shock processing (LSP) impacts were investigated.About:
This article is published in Acta Materialia.The article was published on 2010-06-01. It has received 316 citations till now. The article focuses on the topics: Grain boundary & Recrystallization (metallurgy).read more
Citations
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Grain refinement mechanism of multiple laser shock processing impacts on ANSI 304 stainless steel
Jin Zhon Lu,Kaiyu Luo,Yong Kang Zhang,Sun Guifang,Y.Y. Gu,Jianzhong Zhou,Xu Dong Ren,Xian-Cheng Zhang,Ling Feng Zhang,K.M. Chen,C.Y. Cui,Y.F. Jiang,A.X. Feng,Lai-Chang Zhang +13 more
TL;DR: In this article, the micro-structural evolution and grain refinement in ANSI 304 stainless steel subjected to multiple laser shock processing (LSP) impacts were investigated by means of cross-sectional optical microscopy and transmission electron microscopy observations.
Journal ArticleDOI
Microstructural response and grain refinement mechanism of commercially pure titanium subjected to multiple laser shock peening impacts
TL;DR: In this article, the microstructural response and grain subdivision process in commercially pure (CP) titanium subjected to multiple laser shock peening (LSP) impacts were investigated by means of optical microscopy (OM), scanning electron microscopy and transmission electron microscope (TEM) observations.
Journal ArticleDOI
Gradient nanostructure and residual stresses induced by Ultrasonic Nano-crystal Surface Modification in 304 austenitic stainless steel for high strength and high ductility
Chang Ye,Abhishek Telang,Amrinder S. Gill,Sergey Suslov,Yaakov Idell,Kai Zweiacker,Jörg M.K. Wiezorek,Zhong Zhou,Dong Qian,Seetha R. Mannava,Vijay K. Vasudevan +10 more
TL;DR: In this paper, the effects of ultrasonic nano-crystal surface modification (UNSM) on residual stresses, microstructure changes and mechanical properties of austenitic stainless steel 304 were investigated.
Journal ArticleDOI
Microstructure, residual stress and tensile properties control of wire-arc additive manufactured 2319 aluminum alloy with laser shock peening
Rujian Sun,Liuhe Li,Ying Zhu,Wei Guo,Peng Peng,Baoqiang Cong,Jianfei Sun,Zhigang Che,Bo Li,Chao Guo,Lei Liu +10 more
TL;DR: In this paper, laser shock peening was combined with wire-arc additive manufacturing to refine microstructure, modify stress state and enhance tensile properties of as-printed 2319 aluminum alloy.
Journal ArticleDOI
High-performance integrated additive manufacturing with laser shock peening –induced microstructural evolution and improvement in mechanical properties of Ti6Al4V alloy components
TL;DR: In this article, the impact of the angle between LSW and the deposited plane on tensile properties of both SLM-LSPed specimens was analyzed, and two kinds of LSW-induced atomic diffusion processes at the interfaces between both adjacent deposited layers were presented.
References
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Journal ArticleDOI
Deformation Twinning in Nanocrystalline Aluminum
TL;DR: Transmission electron microscope observations that provide evidence of deformation twinning in plastically deformed nanocrystalline aluminum underscore a transition from deformation mechanisms controlled by normal slip to those controlled by partial dislocation activity when grain size decreases to tens of nanometers, and they have implications for interpreting the unusual mechanical behavior of nanocrystaline materials.
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Laser shock processing and its effects on microstructure and properties of metal alloys: a review
TL;DR: In this paper, the current status of research and development on laser shock processing of metals, also known as laser peening, using Q-switched high power lasers is reviewed and the influence of processing parameters on the laser-induced shock waves in metal components are discussed and analyzed.
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An investigation of surface nanocrystallization mechanism in Fe induced by surface mechanical attrition treatment
TL;DR: A grain refinement mechanism induced by plastic deformation during the SMA treatment in Fe was proposed in this article, which involves formation of dense dislocation walls (DDWs) and dislocation tangles (DTs) in original grains and in the refined cells under further straining.
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Laser shock processing of aluminium alloys. Application to high cycle fatigue behaviour
TL;DR: In this article, the role of laser shock processing (LSP) on the cyclic properties of A356, Al12Si and 7075 aluminium alloys was evaluated, and major contributors to the fatigue performance improvements were investigated in order to determine the optimum shock conditions.
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Surface nanocrystallization by surface mechanical attrition treatment and its effect on structure and properties of plasma nitrided AISI 321 stainless steel
TL;DR: In this paper, a plastic deformation surface layer with nanocrystalline grains was produced on AISI 321 austenitic stainless steel by means of surface mechanical attrition treatment (SMAT).