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Effect of Intermetallic Phases on Corrosion Initiation of AZ91 Alloy With Rare Earth Y AdditionLi-na Zhang1,Ruiling Jia1,2,Dan Li1,Wei Zhang2,Feng Guo11. School of Materials Science and Engineering... in-situ the effect of the(5 phase and the above two RE intermetallic phases on the corrosion initiation of the alloys.The results show that the corrosion attack of AZ91 Mg alloy without Y addition......
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:TG456.3 文献标志码:A Fatigue crack initiation behavior of titanium alloy electron beam welded joints LIU Xin, MAO Zhi-yong (National Key Laboratory of Science and Technology on Power.... Based on in-situ observation technology,the behaviour of fatigue crack initiation of titanium alloy electron beam weld joints was investigated, and the influence of microstructure heterogeneity......
Effect of weld microstructure on brittle fracture initiation in the thermally-aged boiling water reactor pressure vessel head weld metalNoora Hyt?nen1,Zai-qing Que1,Pentti Arffman1,Jari Lydman1,Pekka...="ChDivSummary" name="ChDivSummary">Effects of the weld microstructure and inclusions on brittle fracture initiation are investigated in a thermally aged ferritic high-nickel weld of a reactor pressure......
用电生的Fe(Ⅱ)-EDTA络合物在Fe(Ⅲ)-EDTA-ClCH2COOH-NaOAc缓冲溶液中精密库仑滴定金 董守安1,吴长蓉1 (1.昆明贵金属研究所,云南,昆明,650221) 摘要:提出了在Fe(Ⅲ)-EDTA-ClCH2COOH-NaOAc缓冲溶液中利用电生Fe(Ⅱ)-ED-TA络合物精密库仑滴定Au的方法.采用电位法检测终点,测定范围在5.2~17.0mg Au时,相对平均误差和标准偏差≤0.03%.方法可用于纯金,金合金和首饰等材料中Au含量的精密分析,选择性很好.讨论了电生Fe(Ⅱ)-EDTA络合物作库仑滴定剂的理论基础,获得了有益的结论. 关键词:分析化学; 精密测定; 库仑分析; 金; 材料; analytical chemistry; precise determination; coulometric analysis; gold; materials......
and crack initiation behavior of 7449 alloy ZHONG Shen1, ZHENG Zi-qiao1, ZHONG Li-ping1, LI Hong-ping2, WU Qiu-ping2 (1. School of Materials Science and Engineering, Central South University, Changsha 410083, China; 2. Material and Standard Department, Shanghai Aircraft Design and Research Institute, Shanghai 200232, China) Abstract: The high-cycle fatigue and crack initiation behavior......
Crack initiation ahead of piled-up of dislocations emitted from a mode Ⅱ blunt crackCaifu Qian, Wuyang Chu, and Lijie QiaoDepartment of Mechanical Engineering, Beijing University of Chemical Technology, Beijing 100029, ChinaDepartment of Materials Physics, University of Science and Technology Beijing, Beijing 100083, China摘 要:<正>In situ tensile......
基于编码识别技术的自动定位系统的研究与应用孙元华1(1.辽宁省大连市大连重工·起重集团有限公司设计研究院 )摘 要:以大容积焦炉车辆走行自动定位系统为研究对象,针对焦炉车辆所要求的走行定位误差优于±5 mm的工艺特点,基于编码识别技术,构建了焦炉车辆走行自动定位控制系统,该系统包含粗定位和精定位两个阶段,实现了预定目标位置的高效自动走行控制,并应用于上海梅山钢铁股份有限公司7 m宽炭化室及神华乌海煤焦化公司捣固5.5 m等焦炉工程项目,不仅验证了控制系统具备稳定性高,响应快,超调量小等优点,同时突出了维护方便,......
Effect of main inclusions on crack initiation in bearing steel in the very high cycle fatigue regimeChao Gu1,Yan-ping Bao1,Peng Gan1,Min Wang1,Jin-shan He21. State Key Laboratory of Advanced... on crack initiation in bearing steel in the very high cycle fatigue(VHCF) regime. The size and type of inclusions in the steel were quantitatively analyzed, and VHCF tests were performed. Some fatigue......
Crack Initiation Mechanism of Z3CN20.09M Duplex Stainless Steel during Corrosion Fatigue in Water and Air at 290 °CH.C.Wu1,B.Yang1,2,Y.Z.Shi1,Q.Gao1,Y.Q.Wang31. State Key Laboratory for Advanced... initiation mechanism of a Z3CN20.09 M duplex stainless steel(DSS) during corrosion fatigue(CF) in water and air at 290 °C was investigated by using a CF cracking machine and a scanning electron......