【摘 要】
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The Mo-alloyed invar alloy is prepared by the vacuum induction melting furnace.The investigations of mechanical properties,phase constitutions,microstructures,thermal expansion features are performed.
【机 构】
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Hebei Iron and Steel Technology Research Institute,Hebei Iron and Steel Group,Shijiazhuang 052165,Ch
【出 处】
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第十届中国钢铁年会暨第六届宝钢学术年会
论文部分内容阅读
The Mo-alloyed invar alloy is prepared by the vacuum induction melting furnace.The investigations of mechanical properties,phase constitutions,microstructures,thermal expansion features are performed.It was found that precipitation of the Mo2C secondary phase could be tailored by adjusting the aging processes,and that the highest strength of 820 MPa and good elongation of 35%,together with a low CTE value of 3.37×10-6/℃ were obtained when solution treating at 1050℃ for 1h and than aging at 525℃ for 3h.Increase in the aging time resulted in the Mo2C phase to aggregate and grow at the grain or sub-grain boundaries of the austenite,concomitant with a deterioration in strength and thermal expansion of the materials.
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