{"title":"A study on the superplasticity of brass and its applications","authors":"Lin Fa-yu , Huang Yi-hong , Ruan Feng","doi":"10.1016/0020-7357(86)90195-2","DOIUrl":"10.1016/0020-7357(86)90195-2","url":null,"abstract":"<div><p>This paper studies the conditions for the superplasticity of two CuZn alloys. Tests have been made with commercial HPb 59-1 brass bar and H62 brass bar, which were machined into tensile specimens. Then the specimens were subjected to heat treatment in order to meet the requirement of fine microstructure for superplasticity. Tensile tests have been carried out at different temperatures and tensile rates on a mechanically-operated high-temperature material testing machine.</p><p>Tests have shown that the superplasticity of HPb 59-1 brass occurred at a temperature of 620°C and a tensile rate of 0.3 mm min<sup>−1</sup> with a ductility of ∼500% without fracture, and that of H62 brass at a temperature of 750°C and a tensile rate of 0.2 mm min<sup>−1</sup> with a ductility of ∼624% without fracture.</p><p>This paper also studies the relations between the strain-rate and the temperature of the two materials, and makes observations on the microstructural changes in the surfaces of the specimens both before and after the tensile tests, using an optical microscope and a scanning electron microscope.</p><p>On the basis of superplastic tensile tests superplastic forming of HPb 59-1 brass is also studied.</p></div>","PeriodicalId":100704,"journal":{"name":"International Journal of Machine Tool Design and Research","volume":"26 1","pages":"Pages 51-60"},"PeriodicalIF":0.0,"publicationDate":"1986-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0020-7357(86)90195-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82550413","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}
{"title":"An analysis of the forging of spur gear forms","authors":"N.A. Abdul , T.A. Dean","doi":"10.1016/0020-7357(86)90212-X","DOIUrl":"10.1016/0020-7357(86)90212-X","url":null,"abstract":"<div><p>Forging spur gear forms in completely closed cavity dies is investigated by means of an upper bound analysis. A velocity field comprising three unit deformation regions is proposed. The tooth regions are approximated by prismatic rectangular sections. The effects of root diameter, number of teeth and workpiece/die interface friction, on flow and forging pressures, are determined.</p><p>Forging pressure without friction is independent of root diameter but increases with the number of teeth. In the presence of friction forging pressure increases with reducing root diameter.</p></div>","PeriodicalId":100704,"journal":{"name":"International Journal of Machine Tool Design and Research","volume":"26 2","pages":"Pages 113-123"},"PeriodicalIF":0.0,"publicationDate":"1986-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0020-7357(86)90212-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77565075","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}
{"title":"Barreling of a short cylinder in compression","authors":"N.K. Gupta , C.B. Shah","doi":"10.1016/0020-7357(86)90214-3","DOIUrl":"10.1016/0020-7357(86)90214-3","url":null,"abstract":"<div><p>Large deformation behaviour of aluminium and low carbon steel short cylinders of various diameters and height to diameter ratios, loaded axially in a simple compression test without using any lubricant, is examined. Typical histories of deformation of the cylindrical surface and the end face are presented with a view to studying the nature and the extent of free surface barreling, its folding into the end face and effects of specimen size thereon. The results reveal that the profile of a deforming specimen can sensibly be approximated by an arc of a circle only after the onset of folding.</p></div>","PeriodicalId":100704,"journal":{"name":"International Journal of Machine Tool Design and Research","volume":"26 2","pages":"Pages 137-146"},"PeriodicalIF":0.0,"publicationDate":"1986-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0020-7357(86)90214-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82496933","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}
{"title":"4561350 Soft drink can crusher","authors":"","doi":"10.1016/0020-7357(86)90092-2","DOIUrl":"https://doi.org/10.1016/0020-7357(86)90092-2","url":null,"abstract":"","PeriodicalId":100704,"journal":{"name":"International Journal of Machine Tool Design and Research","volume":"26 4","pages":"Page xv"},"PeriodicalIF":0.0,"publicationDate":"1986-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0020-7357(86)90092-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136677509","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}
{"title":"4561383 Birdhouse with cylindrical compartments","authors":"","doi":"10.1016/0020-7357(86)90093-4","DOIUrl":"https://doi.org/10.1016/0020-7357(86)90093-4","url":null,"abstract":"","PeriodicalId":100704,"journal":{"name":"International Journal of Machine Tool Design and Research","volume":"26 4","pages":"Page xv"},"PeriodicalIF":0.0,"publicationDate":"1986-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0020-7357(86)90093-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136677510","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}
{"title":"4561050 Method of determining coordinate system in machining center","authors":"","doi":"10.1016/0020-7357(86)90083-1","DOIUrl":"https://doi.org/10.1016/0020-7357(86)90083-1","url":null,"abstract":"","PeriodicalId":100704,"journal":{"name":"International Journal of Machine Tool Design and Research","volume":"26 4","pages":"Page xii"},"PeriodicalIF":0.0,"publicationDate":"1986-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0020-7357(86)90083-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136691192","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}
{"title":"4559707 Error correction system for length measuring device","authors":"","doi":"10.1016/0020-7357(86)90069-7","DOIUrl":"https://doi.org/10.1016/0020-7357(86)90069-7","url":null,"abstract":"","PeriodicalId":100704,"journal":{"name":"International Journal of Machine Tool Design and Research","volume":"26 4","pages":"Page ix"},"PeriodicalIF":0.0,"publicationDate":"1986-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0020-7357(86)90069-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136717335","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}