国家重点基础研究发展计划(2002BA315A-5)

作品数：5被引量：26H指数：2
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相关期刊：《Journal of Rare Earths》更多>>
相关主题：RARE_EARTHSLANTHANUMMANGANESECERIUMPURITY更多>>
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Influence of Rare Earths on Improve Impact Property of Structural Alloy Steel with Extra Low Sulfur and Oxygen
《Journal of Rare Earths》2007年第S2期273-277,共5页郭锋 林勤 
Project supported bythe Ministry of Science and Technology of China (2002BA315A-5)
The influence of rare earth lanthanum and cerium on impact property of structural alloy steel with extra low sulfur and oxygen was studied by impact test and microanalysis. The results showed that rare earths increase...
关键词：LANTHANUM CERIUM extra low sulfur and oxygen structure alloy steel impact toughness mechanism 
Kinetics Analysis of Pre-Eutectoid Transformation of Austenite in Carbon-Manganese Clean Steel with Rare Earths
《Journal of Rare Earths》2007年第S1期465-467,共3页郭锋 林勤 
the Ministry of Science and Technology of China (2002BA315A-5)
By means of rapid cool dilatometry, the influence of rare earths on kinetics of pre-eutectoid transformation of austenite of carbon-manganese clean steel was studied. While the content of rare earths were proper, the ...
关键词：clean steel per-eutectoid transformation KINETICS rare earths 
Behaviors of Lanthanum and Cerium on Grain Boundaries in Carbon Manganese Clean Steel被引量：20
《Journal of Rare Earths》2007年第4期485-489,共5页林勤 郭锋 朱兴元 
Project supported by the Ministry of Science and Technology of China (2002BA315A-5)
The behaviors of La and Ce on gram boundaries in carbon manganese clean steel were investigated by high-reso- lution transmission elecetron microscope （HRTEM）, scanning elecetron microscopy（SEM ）, energy dispersiv...
关键词：LANTHANUM CERIUM grain boundaries carbon manganese clean steel rare earths 
Existing Forms of Lanthanum in Purity Steels被引量：1
《Journal of Rare Earths》2006年第z2期405-408,共4页郭锋 林勤 
Project supported by the Ministry of Science and Technology of China (2002BA315A-5)
Adding lanthanum to carbon-manganese purity steel, the existing forms of lanthanum were investigated. The results show that enrichment on grain boundary and solid solution in cementite are two kinds of important exist...
关键词：LANTHANUM purity steel grain boundary enrichment solid solution rare earths 
Study on Interaction between Lanthanum and Phosphor in Purity Steel被引量：6
《Journal of Rare Earths》2006年第z2期409-412,共4页郭锋 林勤 
Project supported by the Ministry of Science and Technology of China (2002BA315A-5)
Using SEM and EDS some particles containing La and P were discovered in low oxygen and sulfur purity steel with lanthanum. In these particles low melting point elements such as As and Sb also were detected. According ...
关键词：particles containing La and P purity steel with lanthanum element segregation rare earths 
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