Direct-fitting/modified Williamson-Hall(DF/mWH)法を用いた低炭素焼戻しマルテンサイト鋼の転位密度解析
書誌事項
- タイトル別名
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- Analysis of Dislocation Density by Direct-fitting/modified Williamson-Hall (DF/mWH) Method in Tempered Low-carbon Martensitic Steel
- Direct-fitting/modified Williamson-Hall (DF/mWH)ホウ オ モチイタ テイタンソ ヤキモドシ マルテンサイトコウ ノ テンイ ミツド カイセキ
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<p>To calculate the dislocation density of tempered low-carbon martensitic steels (Fe-0.15%C alloy) by the direct-fitting/modified Williamson-Hall (DF/mWH) method, the unknown parameter A in tempered martensite was investigated. In the DF/mWH method, the dislocation density ρ is defined as ρ=2φ2/(πA2b2). Here, φ and b correspond to the slope of the DF/mWH plot and the magnitude of the Burgers vector, respectively. In low-carbon martensitic steels tempered at 573 - 873 K, φ and ρ were estimated by the DF/mWH method and the modified Williamson-Hall/Warren-Averbach method, respectively. As a result, these parameters decreased with increasing tempering temperature. By substituting φ and ρ in the above equation, the parameter A can be obtained as a function of the tempering parameter λ as follows:</p><p>A = –1.53 × 10−5 × λ + 0.982</p><p>The parameter A in low-carbon martensitic steels tempered at 573 - 873 K for 18 ks was calculated to be 0.7 - 0.8. Using the parameters A and φ obtained by the DF/mWH method, dislocation density ρ can be easily estimated.</p>
収録刊行物
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- 鉄と鋼
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鉄と鋼 106 (11), 826-834, 2020
一般社団法人 日本鉄鋼協会
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詳細情報 詳細情報について
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- CRID
- 1390567901488244224
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- NII論文ID
- 130007932325
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- NII書誌ID
- AN00151251
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- ISSN
- 18832954
- 00211575
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- NDL書誌ID
- 030732729
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可