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首页> 外文学位 >The effect of boron content, temperature, and neutron fluence on the mechanical properties of the modified type 304 stainless steels with boron.
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The effect of boron content, temperature, and neutron fluence on the mechanical properties of the modified type 304 stainless steels with boron.

机译：硼含量，温度和中子注量对含硼改性304不锈钢力学性能的影响。

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摘要

Tensile tests and J{dollar}sb{lcub}rm IC{rcub}{dollar} tests were performed on the NeutroSorb PLUS{dollar}sp{lcub}rm TM{rcub}{dollar} and the NeutroSorb{dollar}sp{lcub}rm TM{rcub}{dollar} series of boron containing modified type 304 stainless steels manufactured by Carpenter Technology Corporation. The steels include both wrought type and powder metallurgy type and are of various boron content. Test specimens were irradiated with neutrons to various fluence levels, i.e., 0, {dollar}5times10sp{lcub}15{rcub}, 1times10sp{lcub}17{rcub}{dollar} n/cm{dollar}sp2.{dollar} Tests were conducted at temperatures of {dollar}-{dollar}40, 75, and 500{dollar}spcirc{dollar}F (or 233, 298 and 533 K) to simulate various application temperature conditions. The tensile properties and the J toughness of the borated steels experienced little change after neutron irradiation. Limited temperature effects were found on the tensile properties and toughness of some borated steels, in both unirradiated and irradiated samples. The boron content in the steels was the most important factor affecting the mechanical properties. The powder metallurgy products show better mechanical properties and toughness than the cast and wrought products, mainly because of the refinement of the microstructure and the spheroidization of the boride particles. Analysis of the experimental results with emphasis on void formation process and radiation damage mechanism is provided. Experiment observations are explained through the analysis.
机译：在NeutroSorb PLUS {dollar} sp {lcub} rm TM {rcub} {dollar}和NeutroSorb {dollar} sp {lcub上进行了拉伸测试和J {dollar} sb {lcub} rm IC {rcub} {dollar}测试} rm TM {rcub} {dollar}系列由Carpenter Technology Corporation制造的含硼改性304不锈钢。这些钢包括锻造型和粉末冶金型，并且具有不同的硼含量。用中子辐照测试样品至各种注量水平，即0，{5} 5×10sp {lcub} 15 {rcub}，1×10sp {lcub} 17 {rcub} {dol} n / cm {dol} sp2。{dollar}测试在{dollar}-{dollar} 40、75和500 {dollar} spcirc {dollar} F（或233、298和533 K）的温度下进行，以模拟各种应用温度条件。在中子辐照之后，硼酸化钢的拉伸性能和J韧性几乎没有变化。在未辐照和辐照样品中，发现某些硼酸钢的拉伸性能和韧性受到有限的温度影响。钢中的硼含量是影响机械性能的最重要因素。粉末冶金产品显示出比铸造和锻造产品更好的机械性能和韧性，这主要是由于微结构的细化和硼化物颗粒的球化。对实验结果进行了分析，重点是空隙形成过程和辐射损伤机理。通过分析解释了实验观察结果。

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  • 作者

    He, Jianhui.;

  • 作者单位

    The Pennsylvania State University.;

  • 授予单位 The Pennsylvania State University.;
  • 学科 Engineering Materials Science.; Chemistry Radiation.; Engineering Metallurgy.
  • 学位 Ph.D.
  • 年度 1995
  • 页码 160 p.
  • 总页数 160
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工程材料学;化学;冶金工业;
  • 关键词

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