Search Results 1-20 of 768

1
2
3
4
5
6
...
39
1 / 39

1

The inside story about development of 1 180 MPa class Ultra-High-Strength Steel Sheets : Struggle against formability and delayed fracture [in Japanese]

山崎一正

技術士 (649), 20-23, 2021-01
2

Effect of Carbon Content on V-Bending in High-Strength TRIP-Aided Dual-Phase Steel Sheets with Polygonal Ferrite Matrix

Nagasaka Akihiko , Hojo Tomohiko , Fujita Masaya , Ohashi Takumi , Miyasaka Mako , Shibayama Yuki , Akiyama Eiji

… Effect of carbon content on V-bending in high-strength TRIP-aided dual-phase (TDP) steel sheets with polygonal ferrite matrix was investigated for automobile applications. … The main results are as follows.(1) The (0.1–0.4)C-1.5Si-1.5Mn, mass% TDP steel sheets were able to perform V-bending by strain-induced martensitic transformation of TRIP effect. …

ISIJ International 61(2), 608-616, 2021

J-STAGE
3

Deformation-induced Martensite Transformation Behavior during Tensile and Compressive Deformation in Low-alloy TRIP Steel Sheets

Kawata Hiroyuki , Yasutomi Takashi , Shirakami Satoshi , Nakamura Kohki , Sakurada Eisaku

… Transformation-induced plasticity (TRIP) is a phenomenon that improves the deformability of high-strength steel. … To clarify the mechanism of the transformation in low-alloy TRIP steel, we evaluated the transformation behavior via in-plane tension and compression experiments. …

ISIJ International 61(2), 527-536, 2021

J-STAGE
4

Effects of Si and Mn Contents on V-bending in High Strength TRIP-aided Dual-Phase Steel Sheets with Polygonal Ferrite Matrix [in Japanese]

Nagasaka Akihiko , Hojo Tomohiko , Fujita Masaya , Ohashi Takumi , Miyasaka Mako , Shibayama Yuki , Akiyama Eiji

… Effects of Si and Mn contents on V-bending in high strength TRIP-aided dual-phase (TDP) steel sheets with polygonal ferrite matrix were investigated for automotive applications. …

Tetsu-to-Hagane 107(2), 154-164, 2021

J-STAGE
5

Axial Crash Fracture of 980 MPa High Strength Steel Sheets [in Japanese]

Sakaidani Tomohiro , Sato Kentaro , Tamai Yoshikiyo , Komine Shinsuke , Nakagaito Tatsuya , Urabe Toshiaki

ハイテン材をエネルギー吸収部品に適用するには、衝突変形時の破断によるエネルギー吸収特性の不安定化が課題である。本研究では、プレス成形を考慮した軸圧壊変形における破断挙動を評価するために、独自の直交逆曲げ破断試験を提案し，直交逆曲げ破断試験によりプレス成形部品の軸圧壊破断を再現できることが示された。

Transactions of Society of Automotive Engineers of Japan 52(1), 197-202, 2021

J-STAGE
6

Rapid Evaluation of Hydrogen Embrittlement Resistance for Spot-Welds of High Tensile Strength Steel Sheet by Slow Rate Tensile Shear Test under Hydrogen Charging Conditions [in Japanese]

Kitahara Gaku , Matsuoka Hideaki , Asada Takashi

… Automobile manufacturers are accelerating adoption of spot welding of Advanced High-Strength-Steels (AHSS) sheets to reduce weight of automobile bodies. … Rapid evaluation of the hydrogen embrittlement (HE) resistance for the spot-welds of AHSS sheets is required, since it is worried that the HE resistance of the nugget will deteriorate compared to the base metal due to the difference in microstructure caused by rapid cooling and solidification during spot welding. …

Journal of the Japan Institute of Metals and Materials 85(2), 75-83, 2021

J-STAGE
7

Effect of Phosphorus Content on Hydrogen Embrittlement for High Strength Steel Treated with Electroless Ni–P Plating

Hino Makoto , Doi Yuho , Kuwano Ryoichi , Oda Yukinori , Horikawa Keitaro

… Hydrogen embrittlement of SK85 high-strength steel sheets was evaluated through a three-point bending test. … On the morrow of the plating, electroless Ni–P plating indicates a high degree of hydrogen embrittlement, irrespective of the phosphorus content in the film. …

MATERIALS TRANSACTIONS 62(1), 75-81, 2021

J-STAGE
8

Effect of Microstructural Factors and Mechanical Properties on Axial Crash Fracture of High Strength Steel Sheets [in Japanese]

Komine Shinsuke , nakagaito Tatsuya , Yokota Takeshi , Sakaidani Tomohiro , Sato Kentaro , Urabe Toshiaki

ハイテン材をエネルギー吸収部品に適用するには、衝突変形時の破断を抑制し安定的に高い吸収エネルギーを得ることが課題である。本研究では、プレス成形による一次加工部における軸圧壊変形を模擬した耐破断特性評価法を用いて、変形中の組織を解析し、破断現象に及ぼす組織因子および材料特性の影響について考察した。

Transactions of Society of Automotive Engineers of Japan 52(1), 94-99, 2021

J-STAGE
9

Joining of Nuts, Bolts and Pins with High Strength Steel Sheets by Punching [in Japanese]

森謙一郎

素形材 61(9), 49-54, 2020-09
10

Cold Forge Spot-Bonding of High Tensile-Strength Steel and Aluminum Alloy Sheets [in Japanese]

石川孝司

素形材 61(9), 39-43, 2020-09
11

Welding Technologies for High Strength Steel Sheets for Automotive Use : Solutions for Problems Arising from Steel-Strengthening [in Japanese]

松田広志

塑性と加工 = Journal of the Japan Society for Technology of Plasticity : 日本塑性加工学会論文誌 61(710), 151-155, 2020-03
12

Shearing Processes of High Strength Steel Sheets [in Japanese]

森謙一郎

塑性と加工 = Journal of the Japan Society for Technology of Plasticity : 日本塑性加工学会論文誌 61(710), 136-140, 2020-03
13

Applicable range of technical guideline "Guideline for Reinforcement Construction Technique Winded by Thin Divided Steel Plates with Short Ribs and Continuous Plastic Fiber Sheets -HP seismic design- (3rd edition)" [in Japanese]

渡部洋 , 神戸渡 , 小川勝利 , 佐野ゆかり , 中村円香

… The Institute of Science and Technology of Kanto Gakuin University was requested to carry out technical certification of the "reinforcement construction technique winded by thin divided steel plates with short ribs and continuous plastic fiber sheets as HP seismic method" by the Organization for Middle and High-rise Seismic Building in July 2018. …

関東学院大学工学総合研究所報 (48), 67-71, 2020-03

IR
14

SHEAR RESISTANCE MECHANISMS OF HIGH-PANELIZED SHEET WALLS WITH BURRING HOLES:Shear stiffness and large deformation behavior [in Japanese]

KAWAI Yoshimichi , TOHNAI Shigeaki , KAIBARA Hiroyuki , SATO Atsushi , ONO Tetsuro

… High-panelized steel sheet shear walls with cold formed edge stiffened burring holes are applied to flat offices, stores, and warehouses in seismically active and typhoon or hurricane prone regions. … A 3.53~4.53 m long × 0.455 m wide sheet containing the vertically aligned burring holes (dia.: 200mm) with a pitch of 320mm is hot-dip zinc–alumi–magnesium alloy-coated steel (nominal yield stress: 295N/mm2, thickness: 1.2mm). …

Journal of Structural and Construction Engineering (Transactions of AIJ) (768), 275-285, 2020-02

J-STAGE AIJ
15

Effect of Weld Line Shape on T-peel Strength in Laser Welded Joint of Automobile High Strength Steel Sheets [in Japanese]

HARA Asato , KITANI Yasushi , IGI Satoshi

980MPa級の自動車用高張力鋼板の重ね溶接において，直線とC字の溶接線形状で継手を作製しT字はく離試験を行った．C字は直線溶接の始終端部に半円を加えた形状とし，総溶接長が一定となるよう半円の直径と直線の長さを変化させた．総溶接長40mmでは，半円の直径が3mmの時にT字はく離強さが最大となり，40mmの直線の約1.7倍となった．応力解析では溶接始終端部に集中する応力が半円形状の付加により緩和され …

Preprints of the National Meeting of JWS 2020f(0), 154-155, 2020

J-STAGE
16

Mechanical Clinching Process with Preforming of Lower Sheet for Joining Aluminium and Ultra-High Strength Steel Sheets

ABE Yohei , MORI Ken-ichiro

… The material flow in the mechanical clinching process with preforming of the lower sheet was improved to increase joint strength for joining an aluminium sheet and an ultra-high strength steel sheet. … Finally, the joint strength increases because of the increased interlock. …

QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY 38(2), 89s-92s, 2020

J-STAGE
17

Microstructure and its hardness estimation of resistance spot weld of ultra-high strength steel sheets:– Development of resistance spot welding with pulsed current pattern for ultra-high strength steel sheets – [in Japanese]

MATSUDA Hiroshi , TANIGUCHI Koichi , IKEDA Rinsei , OI Kenji

… A new resistance spot welding process with "pulsed current post-heating pattern" is developed for improving joint strength of ultra-high strength steel (UHSS) sheets. …

QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY 38(4), 234-242, 2020

J-STAGE
18

Effect of Carbon Content on V-bending in High-Strength TRIP-aided Dual-Phase Steel Sheets with Polygonal Ferrite Matrix [in Japanese]

Nagasaka Akihiko , Hojo Tomohiko , Fujita Masaya , Ohashi Takumi , Miyasaka Mako , Shibayama Yuki , Akiyama Eiji

… Effect of carbon content on V-bending in high-strength TRIP-aided dual-phase (TDP) steel sheets with polygonal ferrite matrix was investigated for automobile applications. … The main results are as follows.(1) The (0.1-0.4)C-1.5Si-1.5Mn, mass% TDP steel sheets were able to perform V-bending by strain-induced martensitic transformation of TRIP effect. …

Tetsu-to-Hagane 106(12), 934-943, 2020

J-STAGE
19

Effect of Baking on Hydrogen Embrittlement for High Strength Steel Treated with Various Zinc Based Electroplating from a Sulfate Bath

Hino Makoto , Mukai Shunsuke , Shimada Takehiro , Okada Koki , Horikawa Keitaro

… The hydrogen embrittlement of SK85 high-strength steel sheets was evaluated using a three-point bending test. … on hydrogen embrittlement were examined by baking the electroplated steel specimen. …

MATERIALS TRANSACTIONS 61(12), 2302-2306, 2020

J-STAGE
20

Effects of Solid-Solute V on the Phosphatability of Hot-Rolled Steel Sheets

Furuya Shinichi , Yamazaki Kazuhiko , Masuoka Hiroyuki , Matsuzaki Akira , Taira Shoichiro

… The phosphatability of hot-rolled steel sheets has become increasingly important with application of higher strength and thinner steel sheets to automotive parts. … Although vanadium (V) is an alloying element which is often added to high strength hot-rolled steel sheets, the effect of V on phosphatability was still unclear. …

ISIJ International 60(11), 2512-2518, 2020

J-STAGE

1
2
3
4
5
6
...
39
1 / 39

Search Results 1-20 of 768

Related Authors

Related Journals