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一、前言材料工作者通常采用金相试片和其二次碳复型来观察奥氏体合金(或钢)的晶内、晶界第二相。这种金相法可以统观晶界、晶内组织,但观察到的晶界相只是在晶界一维截线上的情况,而且只是尺寸较大、较厚的晶界相。这对于了解晶界相的详情有很大局限性。我们采用的晶界萃取碳复型技术,对于详尽地揭示和研究奥氏体合金(或钢)晶界面上沉淀相的形貌特征、分布状况、溶解析出和相互转变,对于晶界相的成分分析,晶体结构和缺陷的鉴定和研究等,是一种可取的有效方法。
First, the foreword Material workers usually use the metallographic specimen and its secondary carbon compound to observe the austenitic alloy (or steel) in the grain, grain boundary second phase. This metallographic method can be unobtrusive grain boundaries, intragranular organization, but the observed grain boundary phase is only one-dimensional line in the grain boundary situation, but only larger, thicker grain boundary phase. This is a great limitation for understanding the details of the grain boundary phase. The grain boundary extraction carbon compounding technique we used reveals and studies the morphology, distribution, dissolution and transformation of the precipitated phase on the austenitic alloy (or steel) grain boundary in detail. For the composition of the grain boundary phase Analysis, crystal structure and defect identification and research, etc., is a desirable and effective method.