论文部分内容阅读
近几年,呼吁改善球铁的强韧性,就石墨组织而论,虽然研究了球墨数量和球径的影响;在基体组织方面,虽然研究了合金元素的影响,贝氏体化,通过热处理获得微细双相混合组织的强化法,但尚未见到考虑降低强度低的石墨相的补强方法。作者从与以往完全不同的观点出发,研究了比基体组织硬而强的第二相,成环状地包围石墨,通过补
In recent years, it has been urged to improve the ductility of ductile iron. In terms of graphite structure, although the influence of the number of inks and the diameter of balls has been studied, the effects of alloying elements have been investigated in the matrix structure, and the results have been bainitic and obtained by heat treatment Fine double phase mixed structure strengthening method, but no reinforcing method has been considered for reducing the graphite phase with low strength. From a completely different point of view, the author studied the hard and strong second phase, which surrounds the graphite in a ring shape,