{"title":"黄铜的超塑性及其应用研究","authors":"Lin Fa-yu , Huang Yi-hong , Ruan Feng","doi":"10.1016/0020-7357(86)90195-2","DOIUrl":null,"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":0.0000,"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":"4","resultStr":"{\"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\":null,\"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\":0.0000,\"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\":\"4\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"International Journal of Machine Tool Design and Research\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/0020735786901952\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Machine Tool Design and Research","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/0020735786901952","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 4
摘要
研究了两种CuZn合金的超塑性条件。用HPb 59-1黄铜棒和H62黄铜棒加工成拉伸试样进行了试验。然后对试样进行热处理，使其达到微观组织细化的超塑性要求。在机械操作的高温材料试验机上进行了不同温度和拉伸速率下的拉伸试验。试验表明，HPb 59-1黄铜在温度为620℃、拉伸速率为0.3 mm min -1时出现超塑性，延展性为~ 500%而不断裂;H62黄铜在温度为750℃、拉伸速率为0.2 mm min -1时出现超塑性，延展性为~ 624%而不断裂。本文还研究了两种材料的应变速率与温度的关系，并利用光学显微镜和扫描电镜观察了拉伸试验前后试样表面的微观组织变化。在超塑性拉伸试验的基础上，对hpb59 -1黄铜的超塑性成形进行了研究。
A study on the superplasticity of brass and its applications
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.
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−1 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−1 with a ductility of ∼624% without fracture.
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.
On the basis of superplastic tensile tests superplastic forming of HPb 59-1 brass is also studied.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
