| 号数 | ばね論文集 65 号（ 2020 年） |
| ページ数 | pp.7-13 |
| 種類 | 論文 |
| 論文名 | 低温焼なましがオーステナイト系ばね用ステンレス鋼帯の単軸力学特性に与える影響 |
| Title | In uence of Low Temperature Annealing in Uniaxial Mechanical Properties of Cold Rolled Stainless Steel Strip for Springs |
| 著者 | 小泉隆行1) |
| Author | Takayuki KOIZUMI1) |
| 抄録 | オーステナイト系ばね用ステンレス鋼帯，調質の記号H（SUS304CSP-H）において，低温焼なまし（400℃，1.5 h）が面内の単軸力学特性に与える影響を調査した． 本鋼帯の圧延方向に負荷した試験において，引張試験での弾性限度（0.05％耐力）及び0.2％耐力は，圧縮試験でのそれらよりも明らかに大きく，圧延直角方向ではこの特性が逆転した．低温焼なまし材でも同様の傾向となるが，引張及び圧縮試験での各耐力の有意差は減少し，焼なまし前と比較して全体の応力レベルが増加した．本鋼帯における低温焼なましの効果は，単軸引張及び圧縮試験における耐力の差異を減少させ，各耐力の応力レベルを焼なまし前よりも有意に増加させることを実験的に明らかにした． |
| Abstract | In order to investigate in-plane anisotropy of cold rolled stainless steel strip for springs (JIS SUS304CSP-H), tension and compression tests were performed using a universal testing machine and for the latter test, a modi ed compression test method was applied. Uniaxial tension and compression tests on as received and low temperature annealed (400 °C, 1.5 h) samples were carried out in rolling direction (RD), 45° (DD) and 90° (TD) inclined to it were subjected respectively. It was observed that the tensile elastic limit (0.05% proof stress) and 0.2% proof stress were distinctly larger than the compressive proof stresses in RD, while in TD samples, these two kinds of tensile proof stresses were smaller than the compressive proof stresses. These relations in as received samples were kept qualitatively even after low temperature annealing although the proof stress differences became smaller compared with as-rolled ones. The proof stresses of the annealed samples were relatively higher than that of the as received samples.Thus, it was xperimentally con rmed that the low temperature annealing decreased the anisotropy of as-rolled strip. |
| 著者の所属 | 1)職業能力開発総合大学校 |
| Belonging | 1)Polytechnic University of Japan |
| Key Words | Annealing-Induced Hardening, Low Temperature Annealing, In-plane Anisotropy, Cold Rolled Strip, Compression Test Method |