Abstract

High boron alloys containing 2.0 wt% B based on 304 and 316 stainless steels, respectively, were prepared by vacuum arc melting method. Hot rolling was conducted to measure the workability of the two types of high boron alloys. M2B borides of long stripy and blocky shape are presented randomly over the matrix in the as-cast alloy based on 304 stainless steel. In addition to the M2B borides, Mo-rich M3B2 borides are formed and they promote the connectivity of the borides in the as-cast alloy based on 316 stainless steel. The alloy based on 304 stainless steel has well hot workability, whereas the alloy based on 316 stainless steel was severely cracked during the hot rolling process.

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