| Effects of B and Ti on the Toughness of HSLA Steel Weld Metals |
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| 引用本文： | 斯重遥,王兆清,刘鹏,虞德华,刘磊. Effects of B and Ti on the Toughness of HSLA Steel Weld Metals[J]. 材料科学技术学报, 1992, 8(4): 294-298 |
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| 作者姓名： | 斯重遥 王兆清 刘鹏 虞德华 刘磊 |
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| 作者单位： | Institute of Metal Research Academia Sinica，Shenyang，110015，China，Institute of Metal Research，Academia Sinica，Shenyang，110015，China，Institute of Metal Research，Academia Sinica，Shenyang，110015，China，Institute of Metal Research，Academia Sinica，Shenyang，110015，China，Capital Iron and Steel Company，Beijing，100053，China |
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| 摘 要： | Effects of microalloying Ti and B on themicrostructures and low temperature toughness ofmanual metal arc (MMA) deposits were investi-gated.Weld metals containing 200-300 ppm Ti and29-60 ppm B deposited by manual coated elec-trodes provided an optimum low temperaturetoughness.The addition of B in weld metals low-ered the γ→α transformation temperature whichpromoted the acicular ferrite (AF) transformation.Solid solutioned B suppressed grain boundaryferrite as well as side plate ferrite formation andbenefited the acicular ferrite formation.Titaniumprotected B from oxidizing as well as nitriding andformed Ti-Mn silicate inclusions.Ultra-high volt-age electron microscope analyses showed that TiOstructure in the Ti-Mn silicate inclusions was thefavorable nucleation site for acicular ferrite forma-tion.
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| 收稿时间： | 1992-07-28 |
Effects of B and Ti on the Toughness of HSLA Steel Weld Metals |
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| SI Zhongyao WANG Zhaoqing LIU Peng YU Dehua LIU Lei Institute of Metal Research,Academia Sinica,Shenyang,,China Capital Iron and Steel Company,Beijing,,China+ To whom correspondence should be addressed. Effects of B and Ti on the Toughness of HSLA Steel Weld Metals[J]. Journal of Materials Science & Technology, 1992, 8(4): 294-298 |
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| Authors: | SI Zhongyao WANG Zhaoqing LIU Peng YU Dehua LIU Lei Institute of Metal Research Academia Sinica Shenyang China Capital Iron Steel Company Beijing China+ To whom correspondence should be addressed |
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| Abstract: | Effects of microalloying Ti and B on the microstructures and low temperature toughness of manual metal arc (MMA) deposits were investi- gated.Weld metals containing 200-300 ppm Ti and 29-60 ppm B deposited by manual coated elec- trodes provided an optimum low temperature toughness.The addition of B in weld metals low- ered the γ→α transformation temperature which promoted the acicular ferrite (AF) transformation. Solid solutioned B suppressed grain boundary ferrite as well as side plate ferrite formation and benefited the acicular ferrite formation.Titanium protected B from oxidizing as well as nitriding and formed Ti-Mn silicate inclusions.Ultra-high volt- age electron microscope analyses showed that TiO structure in the Ti-Mn silicate inclusions was the favorable nucleation site for acicular ferrite forma- tion. |
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| Keywords: | toughness acicular ferrite HSLA steel weld metals addition of B and Ti |
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