Events: Produktion events at Chalmers University of TechnologyMon, 30 Nov 2020 13:02:34 +0100​Inauguration lecture Eduard Hryha IMS​ for Professor in Powder Metallurgy and Additive Manufacturing.<p>On-line</p><p>​Welcome to listen to Eduard Hryha&#39;s lecture &quot;Effect of the powder surface chemistry on powder consolidation by different powder metallurgy and additive manufacturing technologies&quot;. On-line presentation.</p><div><span></span><strong><img src="/SiteCollectionImages/Institutioner/MoT/Profilbilder/EduardHryha_sp.jpg" class="chalmersPosition-FloatLeft" alt="" style="margin:5px" /><br /><br /></strong><span style="font-weight:700">Public lecture - Eduard Hryha</span><div>November 30, 15:00</div></div> <div><strong><br /></strong></div> <div><strong><br /></strong></div> <div><strong><br /></strong></div> <div><strong><br /></strong></div> <div><strong><br /></strong></div> <div><strong><br /></strong></div> <div><strong><br /></strong></div> <div><strong><br /></strong></div> <div><strong><br /></strong></div> <div><strong style="background-color:initial">Abstract</strong><br /></div> <div>Metal powder is a raw material used for variety of manufacturing technologies, starting from large-scale manufacturing of precision parts for e.g. automotive industry by conventional powder metallurgy (PM) to the customized manufacturing of high-end product by additive manufacturing (AM) for e.g. aerospace and biomedical applications.</div> <div>Metal powder is characterised by large surface area that is about 10 000 times larger than the surface of a bulk material of the same mass. This results in high surface reactivity of the powder and hence high sensitivity of the powder to e.g. oxidation, starting from powder manufacturing and following powder handling and processing using variety of powder metallurgy and additive manufacturing processes. This is especially important in case of reactive metals as Ti- and Al-alloys and complex alloys containing elements with high sensitivity to oxygen as Ni-base super-alloys, stainless steels, tool steels, etc. In order to assure necessary powder quality, variety of powder manufacturing methods are used for powder manufacturing, selection of which is based on powder alloy composition, required purity, powder quantity and cost. However, powder surface chemistry will undergo significant changes in terms of oxide transformation and distribution in the consolidated material, that is determined by the powder alloy composition and consolidation process applied. Hence, powder surface chemistry determines requirements to the consolidation process and its efficiency as well as properties of the consolidated material when it comes to the final density and mechanical performance. </div> <div>Analysis of the powder surface chemistry and the assessment of thermodynamics and kinetics of surface reactions are of prime importance for understanding the changes in surface composition related to the process conditions during powder consolidation. Such understanding is of vital importance for manufacturing of oxide-free high-performance components. The analysis is typically performed by means of advanced surface characterisation and thermal analysis techniques in combination with the modelling of the effect of processing conditions. Such experimental input in combination with thermodynamic simulation allows to establish generic models of oxide reduction/formation/transformation in different alloy systems during powder consolidation using different powder metallurgy processes (conventional press&amp;sinter, hot isostatic pressing, liquid phase sintering, etc.) as well as powder-based additive manufacturing (powder bed fusion, binder jetting, material extrusion, etc.). </div> <div>Keywords: powder metallurgy, powder-based additive manufacturing, surface oxide, powder consolidation, oxide transformation.</div> <div><br /></div> <div><a href="/en/Staff/Pages/hryha.aspx" target="_blank"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/ichtm.gif" alt="" />More about Eduard Hryha​</a></div> <div><br /></div> <div></div> Laboratory Annual Seminar 2020<p>Virtual Development Laboratory, Chalmers Tvärgata 4C, M-huset</p><p>We celebrate 20 years of excellent research on Digital Product Realization! Save the date! More info will come!</p>​​ and properties of thermoplastic composites containing wood-based cellulose nano-crystals or cellulose fibres<p>Virtual Development Laboratory, laboratory, Chalmers Tvärgata 4C, M-huset</p><p>​Lilian Forsgren, Doctoral Student at Engineering Materials​ IMS, defends her doctoral thesis.</p>Examiner: ​Antal Boldizar, IMS<div>Opponent: <span style="font-size:14px"><span style="background-color:initial">Sigbritt Karlsson, KTH Stockholm </span></span><div><span style="font-size:14px">Evaluation Committee: </span><span style="background-color:initial">Patric Jannasch, Kemicentrum, LTH Lund, </span><span style="background-color:initial">Berenika Hausnerova, Tomas Bata University Zlin, Czech Republic, </span><span style="background-color:initial">Mikael Skrifvars, Högskolan i Borås </span></div> <div><span style="background-color:initial"><br /></span></div> <div><span style="background-color:initial"><a href="" target="_blank"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/icgen.gif" alt="" />Read more</a></span></div> <div><span style="background-color:initial"><br /></span></div></div> of the Lifetime of District Heating Pipes<p>Virtual Development Laboratory, laboratory, Chalmers Tvärgata 4C, M-huset</p><p>​Alberto Vega, Doctoral Student at Engineering Materials​ defends his doctoral thesis.</p>Supervisor: <span style="background-color:initial">Docent Nazdaneh Yarahmadi</span><div>Examiner:  <span style="background-color:initial">Professor Antal Boldizar, IMS</span></div> <div><span style="background-color:initial">Opponent:  </span><span style="background-color:initial">Professor Mikael Skrifvars, University of Borås</span></div> <div><br /></div> Creates Reality - Factors influencing the driver's perception and consequent understanding of Driving Automation Systems<p>On-line</p><p>​Fjollë Novakazi, Doctoral Student at​ Design &amp; Human Factors IMS, present her licentiate thesis.On-line presentation.</p>Examiner: MariAnne Karlsson, IMS​<div>Discussion leader: Andrew Morris, Loughborough university</div> <div><a href="" target="_blank"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/icgen.gif" alt="" />Read the thesis​</a></div> <div><br /></div> the Black Box – Exploring How Users Make Sense of Fully Automated Vehicles<p>On-line</p><p>​Mikael Johansson, Doctoral Student at Design and Human Factors​ IMS, presents his licentiate thesis.On-line presentation. ​</p>​Examiner: MariAnne Karlsson, IMS<div>Discussion leader: Dimitrios Gkouskos, Högskolan I Halmstad</div> <div><br /></div> <div><a href="" target="_blank"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/icgen.gif" alt="" />Read more​</a></div> <div><br /></div> Disturbance Management - The role of technology and managerial approaches in creating resilient production systems<p>On-line</p><p>​Adriana Ito, Doctoral Student at Production Systems​ IMS, present her licentiate thesis. On-line presentation.</p>​<span style="background-color:initial">Examiner: Johan Stahre, IMS</span><div>Supervisor: Anders Skoogh, IMS<br /><span style="background-color:initial"></span><div>Discussion leader: Robin Sundqvist, Senior Manager, Capgemini Invent, Sweden</div> <div><br /></div> <div><a href="" target="_blank"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/icgen.gif" alt="" />Read more</a></div> <div><br /></div></div> form follow function? Connecting function and geometry models for design space exploration.<p>Virtual Development Laboratory, laboratory, Chalmers Tvärgata 4C, M-huset</p><p>​Jakob Müller, Doctoral Student at Product Development​ IMS, defends his doctoral thesis.</p>​Examiner:  Ola Isaksson, IMS​<div>Opponent: Helen Louise Lockett, Open University, UK </div> <div><br /></div> arena for metal AM Academic online conference<p>Online</p><p></p>Save the date: 11-12 Jan 2021!<div><span style="background-color:initial">The Swedish arena for AM of metals will hold an online in January 2021. </span><span style="background-color:initial">More info will come!</span></div> School 2021<p>Virtual Development Laboratory, laboratory, Chalmers Tvärgata 4C, M-huset</p><p></p>​<span style="background-color:initial">CAM<sup>2</sup> offers a Sp​ring School where you get a basic understanding of additive manufacturing (AM) as the industrial method for prototyping and manufacture of advanced metal parts. </span><div><span style="background-color:initial">The aim of this seminar is to establish basic understanding of additive manufacturing (AM) as the industrial method for prototyping and manufacture of advanced metal parts. </span><br /></div> <div><span style="background-color:initial">The course covers:</span><br /></div> <div><ul><li><span style="background-color:initial">Overview of AM technologies</span></li> <li>Pre- and Post-AM treatment </li></ul></div> <div>The main focus is placed on powder bed metal additive manufacturing technologies, covering hardware design, powder properties, material properties and post-processing.</div>