Rapid solidification behavior of Fe-Cr-Mn-Mo-Si-C alloys

被引：3
|
作者：
Ranganathan, Sathees [1 ]
Makaya, Advenit [1 ]
Fredriksson, Hasse [1 ]
Savage, Steven [1 ]
机构：
[1] Royal Inst Technol, SE-10044 Stockholm, Sweden
来源：
METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE | 2007年 / 38卷 / 06期
关键词：
D O I：
10.1007/s11663-007-9108-4
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The rapid solidification behavior of alloys in the Fe-Cr-Mn-Mo-Si-C system was investigated for different compositions and cooling rates. The C content was varied and alloying additions of Mo and B were studied with respect to their effect on the microstructure. The alloys were cast as either melt-spun ribbons or as 1-mm-thick plates after levitation or as rods 2 to 4 mm in diameter by injection into copper molds. A homogeneous single-phase structure was obtained for the alloy of composition 72.8Fe-8Cr-6Mn-5Si-5Mo-3.2C (wt pct), for a sample diameter of 2.85 mm, at a cooling rate of approximate to 1100 K/s. The single-phase structure was identified as a metastable solid solution, exhibiting the characteristics of the e phase. Upon reheating, decomposition of the single-phase structure into fine bainite plates and secondary carbides was observed between 600 degrees C and 700 degrees C. The annealed structure obtained showed high hardness values (> 850 HV).
引用
收藏
页码：917 / 926
页数：10
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