Effects of Oxygen-fuel Ratio on Structure and Property of Detonation Gun Sprayed WC Coating by ZHAO Li-ying, LIU Ping-an

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EFFECTS OF SHOT PEENING ON HARDNESS OF 18CRNIMO7-6 STEEL BASED ON FINITE ELEMENT ANALYSIS by CHEN HaiKuan, XU GuangTao, SUN Bo, WANG BingBing

Subjects: “…Shot peening;Vickers hardness;18CrNiMo7-6 alloy steel;Random multi-shot finite element model…”
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Effect of artificial ageing on microstructures and mechanical properties of selective laser melted AlMg4.5Sc0.55Mn0.5Zr0.2 alloy by TANG Pengjun, FANG Lijia, WANG Xingyuan, LI Peiyong, ZHANG Xuejun

“…Results indicate that the Vickers hardness of the alloy increases from 102HV to more than 140HV by artificial ageing treatment. …”
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Evaluation of Microstructure and Property of a Turbine Blade Made of GH4033 Alloy After Service for 1600h by FU Chao, FENG Wei, TONG Jin-yan, ZHENG Yun-rong, FENG Qiang

“…Microstructural features including grain microstructure, γ+γ' matrix and grain boundary (GB) carbides in different locations of the serviced blade were observed and quantitatively characterized. Vickers hardness and stress rupture tests were also conducted. …”
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Effect of strain rate on mechanical properties of TC17 and TC4 alloy forgings by CHEN Yuhao, MIN Xiaohua, ZHANG Haiyang, DAI Jincai, ZHOU Yiqun

“…In this work, the effects of different strain rates on the mechanical properties of forged TC17 and TC4 alloys were examined by tensile testing machine, and Vickers hardness tester, OM, SEM, and EBSD were used to study the Vickers hardness, deformation microstructures and fracture morphologies. …”
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THE OPTIMIZATION OF GRINDING DOSAGE ON GRINDING HARDENING by ZHANG NingJu, ZHAO MeiLin

“…By measuring grinding force during tests,calculating specific grinding energy and heat source intensity from theoretical perspective; by testing vickers hardness and observing the microstructure of specimens from the perspective of the experimental research to study grinding hardening effect. …”
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Effects of temperature and additives content on SiC ceramics prepared by spark plasma sintering by GAO Ding, SUN Shijie, JIAO Jian

“…The effects of sintering temperature and additives content on the relative density, polytype, microstructure and mechanical properties of SiC ceramics were investigated by Archimedes drainage method, XRD, SEM, TEM and Vickers hardness test. The results show that the relative density, hardness and fracture toughness of SiC ceramics increase firstly and then decrease from 1300 ℃ to 1800 ℃, and reach the maximum at 1700 ℃. …”
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Microstructure and friction properties of Cu-Fe binary alloys by thermite reaction by ZHANG Hao, CHEN Gang, LUO Tao, SHEN Shucheng

“…The phase structure and microstructure of the Cu-Fe alloy were characterized by XRD, SEM, EDS and EBSD techniques, and the hardness and wear resistance of Cu-Fe alloy were tested by using HVS-1000A Vickers hardness tester and CFT-1 material surface performance tester. …”
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Additive manufacturing process and microstructure during powder extrusion printing of cemented carbides by LU Tengxuan, MENG Xiaoyan, LI Shidi, DENG Xin

“…In combination with vacuum sintering at 1450 ℃ for 60 min, high performance of cemented carbide sample with the shrinkage rate of 17.8%, uniform distribution of WC grain size, and Vickers hardness of 1410HV30 is successfully fabricated. …”
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Structure and mechanical properties of TC4-DT titanium alloy by laser additive joining by GAO Xu, SHEN Shuxin, HE Bei, TANG Haibo

“…The microhardness of the three regions was measured by Vickers hardness tester. The tensile and impact tests of different samples were carried out at room temperature with universal testing machine and pendulum impactor. …”
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Study of root canal isthmus dentin structure and mineral content and microhardness by YAO Qingting, LI Jun, LI Shuhui

“…Methods Thirty single-root premolars with a canal isthmus (experimental group) and thirty single-root premolars without a canal isthmus (control group) were collected and analyzed by scanning electron microscopy, X-ray energy spectrometry and a Vickers microhardness tester. Structure, mineral content and microhardness were compared. …”
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Microstructure and mechanical properties of ZrC-W-Cu composites prepared <i>via</i> gas pressure infiltration by XING Yu-xuan, GUO Ying-kui, CHEN Lei, ZHAO Zhuang-zhi, WANG Yu-jin

“…With the increase of ZrC content, the Vickers hardness of ZrC-W-Cu composites gradually increases and reaches 3.26 GPa when ZrC content is 15%. …”
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Effect of Two-liquid Bimetal Wear Resistance Plate Thickness on Microstructures and Properties of Composition Layer by ZHU Yong-chang, WEI Zun-jie, RONG Shou-fan, SONG Chun-mei

“…The results show that, the sequence of the microstructure from the low carbon steel to the high chromium cast iron is as follows:low carbon steel→pearlite transition layer→composition layer→high chromium cast iron transition layer. The Vickers hardness of composition layer region is from 345 to 1260. …”
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Friction Stir Welding-assisted Diffusion Bond of Al/Zn/Mg Lap Joint by JIN Yu-hua, GAN Rui-gen, CHEN Fei, SHAO Qing-feng, WANG Xi-jing, GUO Ting-biao

“…The microstructure and mechanical properties of the Al/Zn/Mg lap joints were analyzed by means of SEM, EPMA, XRD, tensile experiment and Vickers hardness test. The results show that diffusion layer consists of Al enrichment zone, Al₅Mg₁₁Zn₄ layer and Mg-Zn eutectic zone at proper rotation speed; however, when rotation speed is low, the residual zinc interlayer remains in the diffusion layer; when rotation speed is high, the Al-Mg intermetallic compounds are present again. …”
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Effect of cooling modes after austenitization on stabilities of microstructure and hardness of P92 steel aged at 650℃ by ZHONG Jiao, PENG Zhi-fang, CHEN Fang-yu, PENG Fang-fang, LIU Sheng, SHI Zhen-bin

“…Compared with the AC samples, the total volume fraction of the precipitations/Vickers hardness of the SC sample is higher/lower and the volume fraction of the Laves/M₂₃C₆ phase is remarkably higher/lower. …”
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Effect of vacuum annealing on performances of <i>in-situ</i> Al₂O₃ reinforced Fe-Cr-Ni composites by CHEN Chang, ZHANG Ru-yi, SHI Si-tao, MA Fen-tian

“…The results show that Al₂O₃/Fe-Cr-Ni composites are mainly composed of Fe-Cr-Ni alloy phase, Fe-Cr phase and Al₂O₃ ceramic reinforcement phase. The Vickers hardness, bending strength and fracture toughness of the hot pressed sintered samples are 4.16 GPa, 298.31 MPa and 8.04 MPa·m^1/2, respectively. …”
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Effect of Preparation Process on Microstructure of Nb-16Si Binary Alloys Fabricated by Laser Melting Deposition by LIU Wei, XIONG Hua-ping, LI Neng, CHEN Bo

“…The Nb-16Si alloy fabricated by powder preplaced method with the pure element powder as raw materials is composed of dendritic primary Nb_SS with the size of 1-5<i>μ</i>m and Nb_SS/Nb₃Si eutectic structure and the Vickers micro-hardness of the alloy is about 773HV. …”
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Microstructures and Mechanical Properties of ZL114A Alloy Under Cold Welding State by FAN Zhen-zhong, WAN Tong, WANG Duan-zhi, WANG Kun-peng, WANG Sheng-qiang, HE Du-peng

“…The microstructure and mechanical properties of ZL114A alloy after cold welding were studied by using SEM, EDS, OM, Vickers hardness and WDW-100KN universal tensile tester, the temperature field distribution was calculated by the SYSWELD FEM simulation. …”
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Effects of Bond Coating on NiCrBSi-Mo Composite Functional Coating Properties in Plasma Spraying NiCrBSi-Mo/Ni Coating by DU Ji-yu, LI Fang-yi, LU Hai-yang, SHANG Jian-tong, LI Zhen

“…Bond tensile test results show that excessive bond coating thickness will cause fracture in the interface between bond coating and functional coating during the stretching process; in different grinding surfaces, Vickers hardness of test blocks with a certain bood coating thickness attenuates slowly in the vertical direction. …”
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Effects of graphene oxide on microstructure and mechanical properties of 600℃ high temperature titanium alloy by CHEN Hang, MI Guang-bao, LI Pei-jie, WANG Xu-dong, HUANG Xu, CAO Chun-xiao

“…Meanwhile, the average room temperature tensile strength and yield strength increase by 7.8% and 10.4% respectively and Vickers hardness increases by 25.6%. The strengthening mechanisms of graphene oxide on 600℃ high temperature titanium alloy mainly include grain refinement strengthening,dislocation streng-thening and precipitation strengthening of the (TiZr)₆Si₃ second-phase.…”
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