Scholarlink

<p>The microstructure and mechanical properties of austenitic stainless steel after warm rolling to a total strain of <i>e</i> = 2 with heating to 600&#xa0;°C and subsequent annealing at 800&#xa0;°C are studied. Warm rolling leads to the formation of austenite grains elongated along the rolling direction and flattened in the rolling plane, the formation of submicrocrystalline equiaxed grains and an increase in the content of low- and high-angle boundaries. The average grain size after warm rolling is 0.4&#xa0;µm. Subsequent annealing leads to the development of recovery processes, polygonization and primary recrystallization in certain areas of the deformed structure. The submicrocrystalline equiaxed grains are observed to grow under the influence of annealing, and new recrystallized grains are formed. The average grain size increases up to 1&#xa0;µm. Dispersed MC particles precipitate together with the static recrystallization. Dislocations and grain boundaries are pinned by precipitations, preventing their active migration and the growth of recrystallized grains. These microstructure features of austenitic stainless steel provide a good combination of strength and plastic properties: yield strength up to 685&#xa0;MPa at 20&#xa0;°C and up to 512&#xa0;MPa at 650&#xa0;°C, elongation to failure up to 17.5% and up to 10.9%, respectively.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Effect of Multi-pass Warm Rolling and Annealing on Microstructure and Mechanical Properties of an Austenitic Steel

  • 期刊论文

  • 发表日期：

    2025年5月30日

查看全文
  • Sergey Akkuzin,
  • Igor Litovchenko,
  • Nadezhda Polekhina,
  • Anna Kim,
  • Kseniya Spiridonova,
  • Evgeny Moskvichev

摘要

The microstructure and mechanical properties of austenitic stainless steel after warm rolling to a total strain of e = 2 with heating to 600 °C and subsequent annealing at 800 °C are studied. Warm rolling leads to the formation of austenite grains elongated along the rolling direction and flattened in the rolling plane, the formation of submicrocrystalline equiaxed grains and an increase in the content of low- and high-angle boundaries. The average grain size after warm rolling is 0.4 µm. Subsequent annealing leads to the development of recovery processes, polygonization and primary recrystallization in certain areas of the deformed structure. The submicrocrystalline equiaxed grains are observed to grow under the influence of annealing, and new recrystallized grains are formed. The average grain size increases up to 1 µm. Dispersed MC particles precipitate together with the static recrystallization. Dislocations and grain boundaries are pinned by precipitations, preventing their active migration and the growth of recrystallized grains. These microstructure features of austenitic stainless steel provide a good combination of strength and plastic properties: yield strength up to 685 MPa at 20 °C and up to 512 MPa at 650 °C, elongation to failure up to 17.5% and up to 10.9%, respectively.