RESEARCH ON SECONDARY PHASE PARTICLES IN Ti MICROALLOYED STEEL AND HEAT-AFFECTED ZONE

CHEN Mao-ai; TANG Yi-min; ZHAO Neng

Volume 21 Issue 2

Jun. 2000

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CHEN Mao-ai, TANG Yi-min, ZHAO Neng. RESEARCH ON SECONDARY PHASE PARTICLES IN Ti MICROALLOYED STEEL AND HEAT-AFFECTED ZONE[J]. IRON STEEL VANADIUM TITANIUM, 2000, 21(2): 1-5.

Citation:

CHEN Mao-ai, TANG Yi-min, ZHAO Neng. RESEARCH ON SECONDARY PHASE PARTICLES IN Ti MICROALLOYED STEEL AND HEAT-AFFECTED ZONE[J]. IRON STEEL VANADIUM TITANIUM, 2000, 21(2): 1-5.

CHEN Mao-ai, TANG Yi-min, ZHAO Neng. RESEARCH ON SECONDARY PHASE PARTICLES IN Ti MICROALLOYED STEEL AND HEAT-AFFECTED ZONE[J]. IRON STEEL VANADIUM TITANIUM, 2000, 21(2): 1-5.

Citation:

CHEN Mao-ai, TANG Yi-min, ZHAO Neng. RESEARCH ON SECONDARY PHASE PARTICLES IN Ti MICROALLOYED STEEL AND HEAT-AFFECTED ZONE[J]. IRON STEEL VANADIUM TITANIUM, 2000, 21(2): 1-5.

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RESEARCH ON SECONDARY PHASE PARTICLES IN Ti MICROALLOYED STEEL AND HEAT-AFFECTED ZONE

1. Material Science and Engineering Department of Shandong Industrial University, Shandong, Jinan 250061, China;
2. Material Science and Engineering Department of Shanghai Communication University, Shanghai 200030, China;
3. Iron & Steel Research Institute, Baoshan Iron & Steel Corp., Shanghai 200586, China

Received Date: 1999-12-14

Abstract

Abstract

The secondary phase particles in Ti microalloyed steel and heat-affected zone are investigated through the extraction replica and metal film electron microscopic analysis.It is concluded that main particles in Ti microlloyed steel and its heat-affect zone are TiN as well as little AlN.Crystal grain sizes are increased obviously and the quantity is reduced after thermal circulation.In comparison to steels with high Ti and N contents,the quantity of TiN particles in the steel with low Ti/N contents is more than those and grain size is less.During thermal circulation the low dissolving capacity and coarsing of TiN particles appear,which has widely hindered action on grain growth of original austenite.
- secondary phase particle,
- heat-effected zone,
- austenite grain size

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