Results 41 to 50 of about 13,047 (166)
Shiyou jixie, 2012 采用光学显微镜、X射线衍射仪（XRD）、扫描电镜（SEM）和显微硬度计，研究了镍基合金等离子弧堆焊层的组织和性能。堆焊的基材为X65管线钢，焊丝是ERNiCrMo-3。研究结果表明，堆焊层由柱状晶和共晶组织组成，堆焊层中的柱状晶为γ固溶体，共晶组织为γ固溶体和Laves 相(富含Mo、Nb)；由腐蚀电化学测试可知，堆焊层的耐蚀性能随着堆焊电流的增大而减弱；氢致开裂试验结果表明，堆焊电流越大，越容易发生氢致裂纹；显微硬度测试结果表明，由基体至堆焊层显微硬度先升高后下降，熔合区硬度最高，可达310 HV以上。
高伟, 刘志豪
doaj
Optimized Copper Distribution and Enhanced Coercivity in PrO2‐Doped Sm2Co17‐Type Magnets
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT A rational design of Cu distribution is crucial for achieving optimal magnetic properties in Sm2Co17‐type magnets. In this study, nanostructured PrO2 powders were employed to induce Cu redistribution at grain boundaries while preserving the cellular microstructure. The corresponding coercivity (Hcj), remanence (Br), and maximum energy product (
Qi‐Qi Yang +5 more
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Gaoya dianqi, 2008 为了进一步提高CuCr合金的使用性能,笔者研究了挤压变形CuCr25合金的显微组织变化以及不同的时效温度和时效时间条件下CuCr25合金显微硬度和电导率的变化规律。结果表明:挤压变形后合金的显微组织均匀,晶粒大大细化;CuCr25合金挤压后经过950℃×1h固溶,在450℃时效2h可获得较好的综合性能,显微硬度可达到156HV,较铸态提高了68%,电导率可达24mS/m,较铸态提高了14%。
周志明 +3 more
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Study on Microstructure and properties of melting and casting and hot rolling process of 8079 high precision aluminum foil stock [PDF]
, 2015 本文以8079高精铝箔坯料的工艺流程为主线，结合自身在A公司近20年的工作经验和材料科学理论，采用ICP、Alscan在线测氢、金相显微分析、拉伸试验、TEM、SEM、EDS和离线板形检测仪等现代材料分析测试技术，同时运用SPSS软件对测试数据进行统计分析，研究不同制备工艺对铸造组织、均热组织和热轧形变组织的形成规律，以改善8079高精铝板坯的轧制性能和力学性能，使国内企业早日用8079合金替代1235合金生产高品质的双零铝箔提供应用数据，具有一定的理论和实际应用价值。研究工作及结果如下 ...
吴天华
core
Effect of TMCP on the microstructure and mechanical properties of Si-Mn series hainitic steel [PDF]
, 2016 The effects of two different thermomechanical control processes (TMCP) including medium temperature slow cooling and medium temperature isothermal treatment after roiling on the microstructure and mechanical properties of Si-Mn series bainitic steel were
HU Shui-ping, LI Ming-bao
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Yttrium Addition Co‐Enhances the Plasticity and Corrosion Resistance of TiB2‐Refined Al‐Mg‐Zn Alloys
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT To address the degradation of corrosion resistance induced by Al‐5Ti‐B grain refiner during the strengthening of Al‐Mg‐Zn alloys, this study innovatively employed a rare earth element yttrium (Y) alloying strategy to achieve synergistic enhancement of mechanical strength and corrosion resistance.
Wen‐Tao Qin +9 more
wiley +1 more source
Influence of tempering times on the mechanical properties of P91 weld joints [PDF]
, 2017 The P91 weld joint used in the experiment is re-tempered according to the heat treatment process. The effect of tempering times on its mechanical properties, including that at room temperature and high temperature, was then investigated in relation to ...
CUI Zheng +5 more
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Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT Articular cartilage regeneration remains a significant challenge because of its limited intrinsic healing capacity and the inadequacy of conventional treatments for restoring structural and functional integrity. In this study, a novel injectable composite hydrogel scaffold was designed to mimic the extracellular matrix (ECM) of native ...
Zhong‐Lian Wu +13 more
wiley +1 more source
Zhongshan Daxue xuebao. Yixue kexue ban, 2012 【目的】 探讨SENP-1和HIF-1α在肝细胞肝癌组织,癌边缘组织及非癌组织中的表达与肝癌发展的关系和在肝癌新生血管生成中的作用.【方法】 应用RT-PCR、荧光定量PCR和免疫组织化学方法检测57例肝癌组织,癌边缘组织,非癌组织中SENP-1和HIF-1α的表达,用CD34多克隆抗体标记新生血管内皮细胞,计数微血管密度(MVD),分析三者表达的相关性及与相关临床病理参数的关系.【结果】 肝癌组织与癌边缘组织SENP-1、HIF-1αmRNA表达显著高于非癌组织,SENP-1和HIF ...
李湘竑 +5 more
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Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT Thermodynamic prediction‐driven phase‐field kinetic simulation, with experimental verification, is utilized to explore the high‐performance cobalt–nickel based (CoNi‐based) superalloys. The roles of aluminum (Al) in microstructural evolution and precipitation kinetics of ordered L12‐γ′ strengthened Co–Ni–xAl superalloys are revealed. The alloy
Kun‐Ning Niu +6 more
wiley +1 more source