【摘 要】
：
Conventionally,Te has primarily been used to improve the machinability of steel and its alloys.In this work,Te was used to refine the grains of an oxide-dispersion-strengthened (ODS) steel produced by ad-ditive manufacturing (AM) with fixed processing par
【机 构】
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School of Materials Science and Engineering,University of New South Wales Sydney,NSW 2052,Australia;
论文部分内容阅读
Conventionally,Te has primarily been used to improve the machinability of steel and its alloys.In this work,Te was used to refine the grains of an oxide-dispersion-strengthened (ODS) steel produced by ad-ditive manufacturing (AM) with fixed processing parameters.Addition of Te to the raw powder produced an ODS steel with a fine-grained microstructure,in contrast to the ODS steel manufactured without Te.Moreover,the addition of Te resulted in superior yield strength and ultimate tensile strength,which was attributed to the combined effects of grain refinement and the finer nanoparticles (NPs) composed of Te-rich composite NPs and Cr-rich NPs.For the first time,the AM technique was used to obtain grain and nanoparticle sizes of ～3A μm and 6 nm,respectively,from the Te-added ODS steel
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