公开(公告)号：US09108242B2

公开(公告)日：2015-08-18

申请号：US13920172

申请日：2013-06-18

Applicant: SINVENT AS

Inventor： Oystein Grong ,  Casper Van Der Eijk ,  Gabriella Maria Tranell ,  Leiv Olav Kolbeinsen

IPC: B22D11/108 ,  B22D11/11 ,  B22D11/106 ,  C21C7/00 ,  B22D1/00 ,  B22D11/111 ,  B22D11/116

CPC classification number: B22D1/00 ,  B22D11/108 ,  B22D11/11 ,  B22D11/111 ,  B22D11/116 ,  C21C7/0006 ,  C21C7/0037 ,  C21C7/0056 ,  C21C7/0075

Abstract: The present invention concerns a new type of grain refiners for steel, in the form of a particulate composite material, containing a high volume fraction of tailor-made dispersed particles, with the purpose of acting as potent heterogeneous nucleation sites for iron crystals during solidification and subsequent thermo-mechanical treatment of the steel. The material comprises a position of particles of XaSb or XaOb and the element(s) X, where X is one or more elements selected from the group Ce, La, Pr, Nd, Y, Ti, Al, Zr, Ca, Ba, Sr, Mg, Si, Mn, Cr, V, B, Nb, Mo and Fe, and S is sulphur, (O is oxygen), wherein said material additionally contains oxygen, sulphur, carbon and nitrogen, wherein the sulphur (or oxygen) content is between 2 and 30% by weight of said material, while the total content of oxygen (or sulphur), carbon and nitrogen and said other elements selected from the group X is between 98 and 70% by weight of said material, and the said material contains a high volume fraction of finely dispersed XaSb or XaOb particles embedded in a metallic matrix X. The invention further concerns methods for production and use of the composite material.

Abstract translation: 本发明涉及一种新型的用于钢的晶粒细化剂，其为颗粒状复合材料形式，其含有大量的定制分散颗粒，其目的是作为固化期间铁晶体的有效非均相成核位点，以及 随后对钢的热机械处理。 该材料包括XaSb或XaOb颗粒的位置和X元素，其中X是选自Ce，La，Pr，Nd，Y，Ti，Al，Zr，Ca，Ba， Sr，Mg，Si，Mn，Cr，V，B，Nb，Mo和Fe，S为硫，（O为氧），其中所述材料另外含有氧，硫，碳和氮， ）含量在所述材料的2至30重量％之间，而氧（或硫），碳和氮以及选自X组的所有其它元素的总含量为所述材料的98至70重量％，以及 所述材料含有高体积分数的嵌入金属基体X中的精细分散的XaSb或XaOb颗粒。本发明还涉及复合材料的生产和使用方法。