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钛合金TB5板坯脆断原因分析黄德明1,杨雄飞1,韦青峰1,王怀柳2,周茂华2,陈鑫2,赵同新-1,徐聪2(1.攀钢集团研究院有限公司,四川成都 6117312.攀钢集团江油长城特殊钢有限公司,四川江油 621700)摘 要:通过对发生脆性断裂的钛合金TB5试制板坯的化学成分,断口形貌,微观组织进行分析,结果表明板坯化学成分均匀,满足国标要求;断口呈解理及准解理断裂特征,断口有析出相存在,但无夹杂物出现;板坯组织为粗大的等轴晶,晶内有长针片状的析出相,分布均匀且规则.分析显示:板坯发生脆断行为与化学成分无关,导致......
得. 关键词:16MnR钢; 解理断裂; 加载速率; 缺口试样; 应力; 加载方式; 16MnR steel; cleavage fracture; loading rate; notched specimen; stress; loading mode; [全文内容正在添加中] ......
of Architecture and Environment,Sichuan University,Chengdu 610065,China) Abstract: In order to study crack dynamic propagation behavior and rock fracture toughness, single cleavage triangle (SCT) specimens..., and the difference between the initiation toughness and arrest toughness is slight. Key words: single cleavage triangle(SCT) specimen; dynamic initiation toughness; dynamic propagation toughness; drop weight......
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)] is increased. UV melting curves of CT DNA prove the existence of the denaturation and degradation together when the complex exists. The complex is capable of promoting cleavage of pBR322 DNA at 50... 1×10-3 mol·L-1 and the ratio of C(complex) and C(H2O2) is equal to 1:20 at 37 ℃. Key words:Hbbimp; Eu(Ⅲ); DNA; spectroscopic studies; cleavage; rare earths; [全文内容正在添加中] ......
in particle size and shape for samples ground by different mills, resulting in different amounts of exposed surfaces. The particle size, cleavage characteristics caused by grinding environments... substitution; metal ion impurities; density functional theory (DFT) calculation; spodumene; cleavage; flotation 1 Introduction Lithium and several of its compounds, as critical and strategic materials, have been......
at different concentrations can be explained by anisotropic surface broken bond densities and active Ca sites densities, respectively. Key words: calcite; fluorite; surface broken bonds; cleavage... and used for contact angle measurements. The commonly exposed cleavage and crystal surfaces were carefully selected or cleaved to avoid cracks and inclusions. And then the selected crystals were embedded......