Journal of Japan Foundry Engineering Society最新文献_第7页

Mechanical Properties of Spheroidal Graphite Cast Iron Using High Manganese Steel Scrap 用高锰钢废钢制备球墨铸铁的力学性能

Journal of Japan Foundry Engineering Society Pub Date : 2007-08-25 DOI: 10.11279/JFES.79.481

T. Kowata, H. Horie, S. Hiratsuka

引用次数: 0

Effects of Mixing Ratio of Metal Generated in Garbage Malt Furnace on Mechanical Properties of Flake Graphite Cast Iron 垃圾麦芽炉金属掺量对片状石墨铸铁力学性能的影响

Journal of Japan Foundry Engineering Society Pub Date : 2007-08-25 DOI: 10.11279/JFES.79.476

S. Hiratsuka, H. Horie, T. Kowata, Takumi Hareyama

引用次数: 0

Ultrasonic Detection of Crack Opening at Cold Flake Interface of Aluminum Alloy Die-Cast 铝合金压铸件冷片界面裂纹张开的超声检测

Journal of Japan Foundry Engineering Society Pub Date : 2007-07-25 DOI: 10.11279/JFES.79.374

A. Ahamed, H. Kato

{"title":"Ultrasonic Detection of Crack Opening at Cold Flake Interface of Aluminum Alloy Die-Cast","authors":"A. Ahamed, H. Kato","doi":"10.11279/JFES.79.374","DOIUrl":"https://doi.org/10.11279/JFES.79.374","url":null,"abstract":"Ultrasonic measurement was carried out with specimens made by aluminum alloy die-cast plates (ADC12) having a cold flake to observe echoes reflected from the surface, bottom and cold flake. The echo reflected from the cold flake had the same phase as that of the surface echo, and it was found that the ultrasonic wave was reflected from the oxide layer of the cold flake. This means that the cold flake and the matrix are not separated but stick together or join together. Next, ultrasonic measurement was carried out with specimens containing cold flake transversely to the tensile direction during tensile testing with a water bag to examine the change in the echo reflected from the cold flake. In the case of the specimen containing coarse cold fake, the phase of the echo reflected from the cold flake was reversed in the tensile testing, and it was found that debonding occurred between the cold flake and matrix to open the crack at the cold flake. And in some cases, the echo reflected from the cold flake approached to the surface 0.1 mm or less with increasing tensile deformation. Similar results were obtained with specimens containing rather smaller cold flake. These results show that a crack initiates at the cold flake in the tensile deformation of the aluminum alloy die-casts, and also suggests that a crack may grow shortly before final failure.","PeriodicalId":190136,"journal":{"name":"Journal of Japan Foundry Engineering Society","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130215169","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cu-Zn-Si系鉛フリー銅合金鋳物の組織及び機械的性質に及ぼす冷却速度の影響冷却速度对Cu-Zn-Si类无铅铜合金铸件的组织和机械性能的影响

Journal of Japan Foundry Engineering Society Pub Date : 2007-07-25 DOI: 10.11279/JFES.79.380

西尾敏幸, 小林慶三, 松本章宏, 大谷淳一

引用次数: 0

Effects of Chromium on Continuous Cooling Transformation Behavior and Heat Treatment Characteristics for Low Alloyed Ductile Iron 铬对低合金球墨铸铁连续冷却转变行为及热处理特性的影响

Journal of Japan Foundry Engineering Society Pub Date : 2007-07-25 DOI: 10.11279/JFES.79.367

Yukinobu Numata, H. Shibata, Hiroki Nishiyama, T. Nakata, T. Kasugai, H. Katou

{"title":"Effects of Chromium on Continuous Cooling Transformation Behavior and Heat Treatment Characteristics for Low Alloyed Ductile Iron","authors":"Yukinobu Numata, H. Shibata, Hiroki Nishiyama, T. Nakata, T. Kasugai, H. Katou","doi":"10.11279/JFES.79.367","DOIUrl":"https://doi.org/10.11279/JFES.79.367","url":null,"abstract":"The purpose of this study is to clarify the continuous cooling transformation behavior and heat treatment characteristics for four kinds of ductile iron containing 0.5 mass%Cr to 3.5 mass%C r. The speci-mens were austenitized at 1223 K-900 s ， and the range of cooling time from AC3 to 773 K was about 3 s to 4000 s. The volume of crystallized carbide in the low a l1 0yed ductile iron containing 3.5 mass%Cr ranged from 25% to 28%. The ferrite transformation region in CCT diagrams for ductile irons containing Cr less than 1 mass% shifted to a longer cooling time ， and did not exist for duc ti1 e irons containing Cr more than 2 mass%. The pearlite transformation region in CCT diagrams shifted to a higher temperature and a shorter cooling time with increasing Cr content of ductile iron. The bainite transformation region existed only in CCT diagrams for ductile iron with 0.5 mass%Cr. The martensite transformation region less than 2 mass%Cr moved to a lower temperature with an increase in Cr conten t. The hardness of quenched ductile irons containing 0.5 mass%Cr to 2 mass%Cr was about 630HVI0 and that of the ductile iron containing 3.5 mass%Cr was about 800HVI0. The effects of Cr on hardenability for low alloyed ductile irons were smal l.","PeriodicalId":190136,"journal":{"name":"Journal of Japan Foundry Engineering Society","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122335113","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Soldering Reaction between Aluminum Die Casting Alloy and Die Steel Couples 铝压铸合金与模具钢对之间的焊接反应

Journal of Japan Foundry Engineering Society Pub Date : 2007-06-25 DOI: 10.11279/JFES.79.291

S. Yamada, Shigeo Tsukahara, Hideo Ohtsuka, N. Hirosaki

引用次数: 1

Influence of Wettability between Molten Metal and Mold Materials on Fluidity Using Water Model 用水模型研究熔融金属与模具材料之间的润湿性对流动性的影响

Journal of Japan Foundry Engineering Society Pub Date : 2007-06-25 DOI: 10.11279/JFES.79.285

H. Nakae, K. Oota, Kenji Sato

引用次数: 1

Effects of Retained Austenite for Hydrogen Embrittlement on ADI 氢脆残余奥氏体对ADI的影响

Journal of Japan Foundry Engineering Society Pub Date : 2007-05-25 DOI: 10.11279/JFES.79.235

Shigeo Tsukahara, Yasutaka Saito, Hiroyuki Hamamoto, S. Yamada

引用次数: 0

Fracture Properties at Elevated Temperatures of Ferritic Ductile Cast Irons 铁素体球墨铸铁的高温断裂性能

Journal of Japan Foundry Engineering Society Pub Date : 2007-05-25 DOI: 10.11279/JFES.79.229

K. Matsugi, Gaku Bando, G. Sasaki, O. Yanagisawa

引用次数: 1

Effects of Gas Content and Heat Input on Welding Strength between Aluminum Alloy Die Casting and Aluminum Alloy Sheet 气体含量和热输入对铝合金压铸件与铝合金薄板焊接强度的影响

Journal of Japan Foundry Engineering Society Pub Date : 2007-05-25 DOI: 10.11279/JFES.79.223

Emi Yanagihara, Y. Kanno, S. Aoyama, K. Nakahara

引用次数: 0