贝加西西利亚：杜埃罗河岸的“唯一”

四月初，贝加两两利亚（BodegaVegaSicilia）亮相香港苏富比春季名酒拍卖会，在一向被法国名庄主导的名酒拍卖场上，有两班牙酒王之称的贝加西西利亚凭借其旗舰酒款“唯一（Unico）”大放异彩。贝加两两利亚曾是无人问津的杜埃罗河岸（RiberadelDuero）里唯一的酒庄，正因为它酿出来当时“唯一”的好酒，让酒庄乃至整个产区光芒绽放。

Microstructural banding of directed energy deposition-additively manufactured 316L stainless steel

The microstructures of 316L stainless steel created by rapid solidification are investigated by comparing the similar microstructures of individual hatches of directed energy deposition additive manufacturing(DED-AM)and those of single,laser surface-melted tracks formed on a solid plate.High recoil pressure,which is exponentially dependent on the laser beam power density,induces convection of the melt pool,which causes formation of microstructural bands in the as-solidified microstructure.The microstructural bands are associated with changes in the chromium concentration and are a significant component of the inhomogeneous microstructure of DED-AM.