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首页> 外文会议>International Conference on Processing amp; Manufacturing of Advanced Materials Pt.2; Jul 7-11, 2003; Leganes, Madrid, Spain >CHARACTERIZING ALLOY ADDITIONS to HIGH NITROGEN STEELS
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CHARACTERIZING ALLOY ADDITIONS to HIGH NITROGEN STEELS

机译：表征高氮钢的合金添加

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摘要

Numerous articles of individual high nitrogen stainless steel compositions or alloys with near identical alloy compositions have been published characterizing the properties the alloy or the improvement which an individual element contributes to the base alloy's properties. In this study a series of high nitrogen steels alloys were prepared with the intent of characterizing the advantages and limitations of different alloy chemistry on the base alloy's material properties such as: microstructure, mechanical properties, environmental interactions (corrosion and oxidation), and wear. A base composition of Fe-15Cr-15 Mn was chosen. Alloys of similar basic compositions are austenitic and often used as a starting composition as a substitute or replacements for Fe-Cr-Ni stainless steel alloys. Mn is less expensive than Ni, is a strong austenizer, enhances nitrogen solubility, and has no allergenic effects. To this base alloy composition additions of C, N, Si, Mo, and Nb was added. Nitrogen (and carbon) alloys as interstitials and have been shown to enhance strength and reduce corrosion. Niobium (or similar elements) is often added to produce intergranular carbide precipitates that further enhance strength. Molybdenum and silicon are added to improve corrosion-oxidation properties. This study was designed to evaluate the action and interaction of these different alloys and suggest what alloys compositions are best used under different engineering requirements. The results of the experimental alloys are compared with that of two experimental higher-nitrogen commercial alloys steels with further alloy addition of Ni and Cu were also studied. Alloy evaluation included: (ⅰ) microstructure: optical, SEM, and X-ray diffraction, (ⅱ) mechanical properties: yield, tensile, elongation, hardness (room temperature and hot), and energy to failure, (ⅲ) oxidation and corrosion, and (ⅳ) abrasive wear: scratch, pin-on-drum, and pin-on-disk.
机译：已经发表了许多单独的高氮不锈钢成分或具有几乎相同的合金成分的合金的文章，它们表征了合金的性能或单个元素对基础合金性能的贡献。在这项研究中，准备了一系列高氮钢合金，目的是表征不同合金化学性质对基础合金材料性能的优势和局限性，例如：微观组织，机械性能，环境相互作用（腐蚀和氧化）和磨损。选择Fe-15Cr-15 Mn的基本成分。具有类似基本成分的合金是奥氏体，通常用作起始成分，以代替或替代Fe-Cr-Ni不锈钢合金。 Mn比Ni便宜，是强奥氏体，提高了氮的溶解度，并且没有变应原作用。向该基础合金组合物中添加C，N，Si，Mo和Nb。氮（和碳）合金作为填隙材料，已被证明可以提高强度并减少腐蚀。通常添加铌（或类似元素）以产生晶间碳化物沉淀，从而进一步提高强度。添加钼和硅以改善腐蚀氧化性能。这项研究旨在评估这些不同合金的作用和相互作用，并提出在不同工程要求下最适合使用哪种合金成分。将实验合金的结果与两种实验的较高氮商品合金的结果进行了比较，并进一步添加了镍和铜。合金评估包括：（ⅰ）微观结构：光学，SEM和X射线衍射，（ⅱ）力学性能：屈服，拉伸，伸长率，硬度（室温和高温）和破坏能量，（ⅲ）氧化和腐蚀和（ⅳ）磨料磨损：刮擦，销钉鼓和销钉磁盘。

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