書誌事項
- タイトル別名
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- The Effects of .DELTA.-Ferrite Morphology on Low Temperature Fracture Toughness of Austenitic Stainless Steel Weld Metal.
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説明
The effect of δ ferrite morphology and grain boundary property on the low temperature toughness of austenitic stainless steel SUS304L weld metal has been studied. The types of δ ferrite were classified into three categories : vermicular, lacy, and globular. When Charpy test were performed at low temperature, brittle fracture easily occurred in a vermicular type δ ferrite because the longitudinal direction of this δ perallel to [100]δ, that is a cleavage plain.<BR>On the other hand, brittle fracture scarcely occurred in both a globular type and a lacy type δ ferrite, because the the stress concentration must be low at globular type δ and the Kurdjumov-Sachs (K-S) relationship holds between lacy type δ and γ phase. Grain boundary holding the K-S are coherence to grains and hardly cause the decohesion.<BR>The present data indicate that changing the δ ferrite morphology from a vermicular type to lacy type prevents the cleavage fracture and increases the fracture toughness at low temperature.
収録刊行物
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- 溶接学会論文集
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溶接学会論文集 9 (4), 525-531, 1991
一般社団法人 溶接学会
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詳細情報 詳細情報について
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- CRID
- 1390282679700406016
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- NII論文ID
- 130003935106
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- ISSN
- 24348252
- 02884771
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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
- Crossref
- CiNii Articles
- OpenAIRE
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- 抄録ライセンスフラグ
- 使用不可
