Pub Date : 2021-07-11DOI: 10.1007/978-3-030-75381-8_223
J. Kwame, E. Yakushina, P. Blackwell
{"title":"Effect of Machining Induced Microstructure Changes on the Edge Formability of Titanium Alloys at Room Temperature","authors":"J. Kwame, E. Yakushina, P. Blackwell","doi":"10.1007/978-3-030-75381-8_223","DOIUrl":"https://doi.org/10.1007/978-3-030-75381-8_223","url":null,"abstract":"","PeriodicalId":422826,"journal":{"name":"Forming the Future","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132842947","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}
Pub Date : 2021-07-11DOI: 10.1007/978-3-030-75381-8_34
B. Krishnamurthy, O. Bylya, Kyle Watt, A. Conway, M. Tuffs, P. Blackwell
{"title":"Instability Analysis in Incremental Rotary Forming of Tube Flanges","authors":"B. Krishnamurthy, O. Bylya, Kyle Watt, A. Conway, M. Tuffs, P. Blackwell","doi":"10.1007/978-3-030-75381-8_34","DOIUrl":"https://doi.org/10.1007/978-3-030-75381-8_34","url":null,"abstract":"","PeriodicalId":422826,"journal":{"name":"Forming the Future","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129968020","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}
Pub Date : 2021-07-11DOI: 10.1007/978-3-030-75381-8_38
Daniel T. Bowen, O. Music, A. Erdinç, A. Shokrani, E. Loukaides
{"title":"Numerical Modelling and Deformation Mechanics of the English Wheel Process","authors":"Daniel T. Bowen, O. Music, A. Erdinç, A. Shokrani, E. Loukaides","doi":"10.1007/978-3-030-75381-8_38","DOIUrl":"https://doi.org/10.1007/978-3-030-75381-8_38","url":null,"abstract":"","PeriodicalId":422826,"journal":{"name":"Forming the Future","volume":"118 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123469655","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}
Pub Date : 2021-07-01DOI: 10.1007/978-3-030-75381-8_7
L. Schell, P. Groche
{"title":"In Search of the Perfect Sheet Metal Forming Tribometer","authors":"L. Schell, P. Groche","doi":"10.1007/978-3-030-75381-8_7","DOIUrl":"https://doi.org/10.1007/978-3-030-75381-8_7","url":null,"abstract":"","PeriodicalId":422826,"journal":{"name":"Forming the Future","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124498084","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}
H. Hoche, F. Jaeger, A. Franceschi, M. Oechsner, P. Groche
The austenitic stainless steels 1.4307 and 1.4404 significantly benefit from cold forming, due to their high work hardening capability. Great potential to improve the component's fatigue properties is expected by optimizing the forming process chain such that specific residual stresses are induced in critical component areas. In this work, an analysis of the formation of residual stresses during rotary swaging is carried out. Through this incremental forming process, high strain hardening and a complex material flow history are induced in the workpieces. Therefore, measuring strategies for the residual stress measurement of cold de-formed austenitic steels by X-Ray diffraction, using the sin2Ψ-method, were developed. Here, especially the 1.4307 is a challenging material due to cold forming induced martensite formation. Despite phase changes, both cold formed materials exhibit anisotropic microstructures as well as coarse grained areas. Moreover, particular notched geometries are produced on the workpieces by rotary swaging. The measuring techniques are further developed for these complex geometries and the residual stresses are investigated.
{"title":"Formation of Residual Stresses in Austenitic Stainless Steels by Infeed and Recess Rotary Swaging","authors":"H. Hoche, F. Jaeger, A. Franceschi, M. Oechsner, P. Groche","doi":"10.31224/osf.io/6uks7","DOIUrl":"https://doi.org/10.31224/osf.io/6uks7","url":null,"abstract":"The austenitic stainless steels 1.4307 and 1.4404 significantly benefit from cold forming, due to their high work hardening capability. Great potential to improve the component's fatigue properties is expected by optimizing the forming process chain such that specific residual stresses are induced in critical component areas. In this work, an analysis of the formation of residual stresses during rotary swaging is carried out. Through this incremental forming process, high strain hardening and a complex material flow history are induced in the workpieces. Therefore, measuring strategies for the residual stress measurement of cold de-formed austenitic steels by X-Ray diffraction, using the sin2Ψ-method, were developed. Here, especially the 1.4307 is a challenging material due to cold forming induced martensite formation. Despite phase changes, both cold formed materials exhibit anisotropic microstructures as well as coarse grained areas. Moreover, particular notched geometries are produced on the workpieces by rotary swaging. The measuring techniques are further developed for these complex geometries and the residual stresses are investigated.","PeriodicalId":422826,"journal":{"name":"Forming the Future","volume":"52 Pt 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128939850","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}
During the manufacturing of semi-finished products, the material is subjected to various forming steps to achieve the final geometry. In order to reduce the work hardening introduced and to ensure a good formability, it is annealed before component manufacturing. Forming technologies like forward rod extrusion are well-established methods for an efficient production of resilient components. In this process however, an inhomogeneous pre-strengthening of the material influences the stress distribution during forming and therefore the mechanical properties and the residual stresses in the component. Since they affect the parts operating behaviour, knowledge of the influence of the delivery condition of the material is necessary. The aim in this paper is to derive dependencies between material properties and the resulting residual stresses and work hardening in the component. Due to the increasing application, ferritic stainless steel X6Cr17 in the skin passed (+LC) and soft annealed (+A) states is used. Residual stresses, microstructure and microhardness distribution of both material states are compared regarding the rods and extruded parts. The effects of the delivery condition are evaluated by comparing process and component properties.
{"title":"Influence of Material Delivery Condition on Residual Stresses and Part Properties During Forward Rod Extrusion","authors":"A. Jobst","doi":"10.31224/osf.io/9wuzm","DOIUrl":"https://doi.org/10.31224/osf.io/9wuzm","url":null,"abstract":"During the manufacturing of semi-finished products, the material is subjected to various forming steps to achieve the final geometry. In order to reduce the work hardening introduced and to ensure a good formability, it is annealed before component manufacturing. Forming technologies like forward rod extrusion are well-established methods for an efficient production of resilient components. In this process however, an inhomogeneous pre-strengthening of the material influences the stress distribution during forming and therefore the mechanical properties and the residual stresses in the component. Since they affect the parts operating behaviour, knowledge of the influence of the delivery condition of the material is necessary. The aim in this paper is to derive dependencies between material properties and the resulting residual stresses and work hardening in the component. Due to the increasing application, ferritic stainless steel X6Cr17 in the skin passed (+LC) and soft annealed (+A) states is used. Residual stresses, microstructure and microhardness distribution of both material states are compared regarding the rods and extruded parts. The effects of the delivery condition are evaluated by comparing process and component properties.","PeriodicalId":422826,"journal":{"name":"Forming the Future","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126406422","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}
Ines Gilch, S. Vogt, T. Neuwirth, B. Schauerte, K. Hameyer, M. Schulz, A. Gustschin, W. Volk, H. A. Weiss
In reluctance and permanent magnet synchronous machines, flux barriers are crucial for magnetic flux guidance. Designed as cutouts, flux barriers reduce the mechanical strength of the rotor construction. To operate these electric drives at higher rotational speed, an alternative flux barrier design is required. Since residual stress influences the magnetic properties of soft magnetic materials, this paper deals with embossing induced residual stress as flux barriers in non-oriented electrical steel with 2.4 wt% silicon and a sheet thickness of 0.35 mm. The investigated flux barriers were fabricated with a cylindrical or spherical punch at two different penetration depths and were compared to a flux barrier fabricated as cutout. A residual stress analysis using Finite Element Analysis helps understanding the mechanism of embossed flux barriers. Additionally, the influence of induced residual stress on the magnetic material behavior is measured using standardized single sheet tests and neutron grating interferometry measurements. This investigation aimed at a better understanding of the flux barrier design by local induction of residual stress.
{"title":"Analysis of Cylindrically and Spherically Embossed Flux Barriers in Non-oriented Electrical Steel","authors":"Ines Gilch, S. Vogt, T. Neuwirth, B. Schauerte, K. Hameyer, M. Schulz, A. Gustschin, W. Volk, H. A. Weiss","doi":"10.31224/osf.io/jr3tx","DOIUrl":"https://doi.org/10.31224/osf.io/jr3tx","url":null,"abstract":"In reluctance and permanent magnet synchronous machines, flux barriers are crucial for magnetic flux guidance. Designed as cutouts, flux barriers reduce the mechanical strength of the rotor construction. To operate these electric drives at higher rotational speed, an alternative flux barrier design is required. Since residual stress influences the magnetic properties of soft magnetic materials, this paper deals with embossing induced residual stress as flux barriers in non-oriented electrical steel with 2.4 wt% silicon and a sheet thickness of 0.35 mm. The investigated flux barriers were fabricated with a cylindrical or spherical punch at two different penetration depths and were compared to a flux barrier fabricated as cutout. A residual stress analysis using Finite Element Analysis helps understanding the mechanism of embossed flux barriers. Additionally, the influence of induced residual stress on the magnetic material behavior is measured using standardized single sheet tests and neutron grating interferometry measurements. This investigation aimed at a better understanding of the flux barrier design by local induction of residual stress.","PeriodicalId":422826,"journal":{"name":"Forming the Future","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129288879","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}
Pub Date : 1900-01-01DOI: 10.1007/978-3-030-75381-8_55
J. Noder, P. Samadian, J. Dykeman, A. Abedini, A. Zhumagulov, M. Worswick, C. Butcher
{"title":"New Methods for Fracture Detection of Automotive Steels","authors":"J. Noder, P. Samadian, J. Dykeman, A. Abedini, A. Zhumagulov, M. Worswick, C. Butcher","doi":"10.1007/978-3-030-75381-8_55","DOIUrl":"https://doi.org/10.1007/978-3-030-75381-8_55","url":null,"abstract":"","PeriodicalId":422826,"journal":{"name":"Forming the Future","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127546058","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}
Pub Date : 1900-01-01DOI: 10.1007/978-3-030-75381-8_30
Shi-Hong Zhang, Da-yong Chen, Yong Xu, Yannan Ma
{"title":"Robust Hydroforming Technologies to Enhance the Formability of Sheet and Tube","authors":"Shi-Hong Zhang, Da-yong Chen, Yong Xu, Yannan Ma","doi":"10.1007/978-3-030-75381-8_30","DOIUrl":"https://doi.org/10.1007/978-3-030-75381-8_30","url":null,"abstract":"","PeriodicalId":422826,"journal":{"name":"Forming the Future","volume":"47 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123268288","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}
Pub Date : 1900-01-01DOI: 10.1007/978-3-030-75381-8_244
Gang Yang, Atsushi Kinoshita
{"title":"Finite Element Method Based on Space Mesh","authors":"Gang Yang, Atsushi Kinoshita","doi":"10.1007/978-3-030-75381-8_244","DOIUrl":"https://doi.org/10.1007/978-3-030-75381-8_244","url":null,"abstract":"","PeriodicalId":422826,"journal":{"name":"Forming the Future","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114903376","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：