クロムの延性-脆性遷移挙動に及ぼす加工熱処理の影響

• 原田 泰典

  豊橋技術科学大学工学部生産システム工学系

• 大森 正信

  広島国際学院大学工学部機械工学科

書誌事項

タイトル別名

• Effect of Thermo-mechanical Treatment on Ductile-Brittle Transition Behavior of Chromium
• クロム ノ エンセイ ゼイセイ センイ キョドウ ニ オヨボス カコウ ネツ ショリ ノ エイキョウ

抄録

High purity chromium powders were sintered into a block by means of hot isostatic pressing. Pieces taken from the sintered block were thermo-mechanically treated, i.e., repeatedly rolled at 973 K up to 50 and 85% in total reduction with and without intermediate annealing at 1273 K. The ductile-brittle transition temperature, DBTT, was determined by a tension test with the specimens cut from the as-sintered block and the rolled sheets. DBTT for the specimen rolled without intermediate annealing was about 600 K, while DBTT of the specimen rolled with the annealing was 400 K much lower than the above temperature 600 K and the temperature 500 K which was found in the as-sintered material. The reduction in DBTT through the thermo-mechanical treatment probably comes from the decrease of susceptibility to the occurrence of brittle fracture at grain boundaries.

収録刊行物

• 日本金属学会誌

  日本金属学会誌 66 (5), 485-491, 2002

  公益社団法人 日本金属学会

キーワード

• chromium
• rolling
• ductile-brittle transition temperature (DBTT)
• tensile test
• thermo-mechanical treatment
• anisotropy
• recrystallization

詳細情報

• CRID: 1390282681468777728
• NII論文ID: 10008833112
• NII書誌ID: AN00187860
• DOI: 10.2320/jinstmet1952.66.5_485
• ISSN: 18806880
• ISSN: 24337501
• ISSN: 00214876
• NDL書誌ID: 6179017
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6179017
• Web Site: https://www.jstage.jst.go.jp/article/jinstmet1952/66/5/66_5_485/_pdf
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