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| 1 | 超级贝氏体钢的热处理显示文摘研究了分别含有0.0005%(质量分数)和0.0024%(质量分数)硼的两种试验用高硅高碳钢以获得超级贝氏体组织。奥氏体化后,试样分别在3种不同的等温温度(150℃、200℃和300℃)保温不同时间。采用带有显微硬度测定的光学显微镜和透射电镜观察试样的微观组织。结果表明,200℃等温转变10天后,两种钢均获得了高体积分数的含有纳米级贝氏体铁素体亚单元的束状组织,具有高达675 HV1的超高显微硬度。添加0.0024%(质量分数)硼能促进200℃等温处理初期的贝氏体相变,但对缩短相变的完成时间没有明显的影响。在150℃和300℃等温不能得到大量的贝氏体组织。 | H.T.Chang H.W.Yen W.T.Lin C.Y.Huang J.R.Yang 顾剑锋 | 2015 | 热处理2015，30，6： | 1 |
| 2 | Experiences of water transfer from the agricultural to the non-agricultural sector in Taiwan显示文摘 | C.C.Huang M.H.Tsai W.T.Lin Y.F.Ho C.H.Tan and Y.L.Sung | | 0，，04： | 1 |
| 3 | Enhanced helium ion irradiation tolerance in a Fe-Co-Ni-Cr-Al-Ti high-entropy alloy with L12 nanoparticles显示文摘L12-strengthened high entropy alloys(HEAs)with excellent room and high-temperature mechanical prop-erties have been proposed as promising candidates as structural materials for advanced nuclear systems.However,knowledge about their radiation response is fairly limited.In the present work,a novel HEA with a high density of L12 nanoparticles was irradiated with He ion at 500°C.Transmission electron microscope(TEM)and atom probe tomography(APT)were employed to study the evolution of mi-crostructural stability and radiation-induced segregation.Similar to the single-phase FeCoNiCr HEA,the main microstructural features were numerous large faulted dislocation loops and helium bubbles.While the irradiation resistance of the present L12-strengthened HEA is much improved in terms of reduced bubble size,which could be attributed to the considerable He trapping efficiency of the coherent pre-cipitate/matrix interface and the enhanced capability of the interface for damage elimination when the matrix channel width is narrow.APT analysis revealed that an inverse-Kirkendall-mechanism-dominated radiation-induced segregation(RIS)occurs around bubbles,where a significant Co enrichment and Ni de-pletion can be clearly observed.In addition,the competing dynamics of ballistic mixing and elemental clustering that raised from the irradiation-enhanced diffusion in a highly supersaturated matrix,along with the low precipitation nucleation barrier due to the small lattice misfit,lead to a dynamical pre-cipitation dissolution and re-precipitation appears under irradiation.Such a promising phenomenon is expected to promote a potential self-healing effect and could in turn provide a sustainable irradiation tolerance over the operational lifetime of a reactor. | Y.L.Zhao F.L.Meng T.Yang J.H.Luan S.F.Liu G.M.Yeli W.T.Lin W.H.Liu X.J.Liu C.T.Liu J.J.Kai | 2023 | Journal of Materials Science & Technology2023，，12： | 0 |
| 4 | He-enhanced heterogeneity of radiation-induced segregation in FeNiCoCr high-entropy alloy显示文摘Radiation-induced segregation(RIS) is a typical non-equilibrium process that can dramatically alter the behavior of defect sinks and material properties under irradiation. However, RIS mechanisms have been rarely studied around small He bubbles owing to the technical challenges involved in direct measurements of local chemistry. Here, using state-of-the-art atom probe tomography, we report the RIS behavior near He bubbles in the Fe Ni Co Cr high-entropy alloy that indicates Co segregates most strongly, followed by weaker Ni segregation, whereas Fe and Cr are depleted almost to the same degree. Exceptionally, the magnitude of Co segregation around He bubbles is higher than previously measured values at voids and dislocation loops. Electron energy-loss spectroscopy was used to measure the He density and pressure inside individual bubbles. We demonstrate that He bubbles are over-pressurized at the irradiation temperature that could result in the vacancy bias and the subsequent vacancy-dominated RIS mechanism.First-principles calculations further reveal that there are repulsive interactions between He and Co atoms that may reduce the frequency of Co-vacancy exchange. As a result, He atoms likely retard Co diffusion via the vacancy mechanism and enhance the heterogeneity of RIS in Co-containing multicomponent alloys. These insights could provide the basis for understanding He effects in nuclear materials and open an avenue for tailoring the local chemical order of medium-and high-entropy alloys. | W.T.Lin G.M.Yeli G.Wang J.H.Lin S.J.Zhao D.Chen S.F.Liu F.L.Meng Y.R.Li F.He Y.Lu J.J.Kai | 2022 | Journal of Materials Science & Technology2022，，6： | 0 |
| 5 | 流的偏心率——在相对论性重离子碰撞过程中初态物质的椭圆流涨落和横向局域化证据(英文)显示文摘Recent measurements of event-by-event elliptic flow in Au+Au collisions at S_(NN)^(1/2)=200GeV exhibit large relative fluctuations of about 40%—50%.The data are well described by fluctuations in the shape of the initial collision region,as estimated event-by-event with the participant eccentricity using Glauber Monte Carlo.These results,combined with the demonstrated participant eccentricity scaling of the elliptic flow across nuclear species,constitute evidence of transverse granularity in the initial matter production in these collisions. | S.Manly B.Alver B.B.Back M.D.Baker M.Ballintijn D.S.Barton R.R.Betts R.Bindel W.Busza Z.Chai V.Chetluru E.Garcfa T.Gburek K.Gulbrandsen J.Hamblen I.Harnarine C.Henderson D.J.Hofman R.S.Hollis R.Hoiynski B.Holzman A.Iordanova J.L.Kane P.Kulinich C.M.Kuo W.Li W.T.Lin C.Loizides S.Manly A.C.Mignerey R.Nouicer A.Olszewski R.Pak C.Reed E.Richardson C.Roland G.Roland J.Sagerer I.Sedykh C.E.Smith M.A.Stankiewicz P.Steinberg G.S.F.Stephans A.Sukhanov A.Szostak M.B.Tonjes A.Trzupek G.J.van Nieuwenhuizen S.S.Vaurynovich R.Verdier G.I.Veres P.Walters E.Wenger D.Willhelm F.L.H.Wolfs B.Wosiek K.Wozniak S.Wyngaardt B.Wyslouch | 2007 | 高能物理与核物理2007，31，12： | 0 |
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