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    <title>Journal of Pressure Vessel Technology Open Issues</title>
    <link>https://asmedigitalcollection.asme.org/pressurevesseltech</link>
    <description>
    </description>
    <language>en-us</language>
    <pubDate>Mon, 11 May 2026 00:00:00 GMT</pubDate>
    <lastBuildDate>Tue, 12 May 2026 00:00:37 GMT</lastBuildDate>
    <generator>Silverchair</generator>
    <managingEditor>ASMEDigitalCollection@asme.org</managingEditor>
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      <title>Research on Low-Temperature Mechanical Properties and Fracture Behavior of 09MnNiDR Steel Based on Small Punch Test</title>
      <link>https://asmedigitalcollection.asme.org/pressurevesseltech/article/148/5/051504/1232699/Research-on-Low-Temperature-Mechanical-Properties</link>
      <pubDate>Mon, 11 May 2026 00:00:00 GMT</pubDate>
      <description>&lt;span class="paragraphSection"&gt;&lt;div class="boxTitle"&gt;Abstract&lt;/div&gt;To develop a microdamage evaluation method applicable to in-service equipment under low-temperature conditions, this study systematically investigates the mechanical properties and fracture behavior of 09MnNiDR cryogenic steel over a broad temperature range from room temperature to −196 °C. The small punch test (SPT) technique is employed, supplemented by electron backscatter diffraction (EBSD) and scanning electron microscopy (SEM) for micromechanism analysis. Results indicate that under cryogenic conditions, dislocation slip is suppressed, leading to a more uniform distribution of plastic strain. Concurrently, the deformation process at low temperatures refines the grains within the plastic zone through mechanisms such as mechanical subdivision. As temperature decreases, the material strength increases linearly, exhibiting a significant cryogenic strengthening effect. The fracture mode transitions from ductile to brittle, with a ductile-to-brittle transition zone identified near −150 °C. An empirical formula based on SPT deformation energy is proposed to predict yield and true tensile strength, with prediction errors below 6%. By introducing a normalized energy parameter, an empirical correlation model is established between the SPT ductile-to-brittle transition temperature (DBTT) and the standard Charpy impact transition temperature. This study presents a viable methodology for safety assessment of in-service cryogenic pressure vessels through minimally invasive testing and performance prediction.&lt;/span&gt;</description>
      <prism:volume xmlns:prism="prism">148</prism:volume>
      <prism:number xmlns:prism="prism">5</prism:number>
      <prism:startingPage xmlns:prism="prism">051504</prism:startingPage>
      <prism:doi xmlns:prism="prism">10.1115/1.4071740</prism:doi>
      <guid>https://asmedigitalcollection.asme.org/pressurevesseltech/article/148/5/051504/1232699/Research-on-Low-Temperature-Mechanical-Properties</guid>
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    <item>
      <title>Improved Oxidation, Carburization Resistance and Creep Strength of Ethylene Pyrolysis Furnace Tubes at 1100 °C Through Aluminum and Tungsten Alloying</title>
      <link>https://asmedigitalcollection.asme.org/pressurevesseltech/article/148/4/041701/1232556/Improved-Oxidation-Carburization-Resistance-and</link>
      <pubDate>Mon, 11 May 2026 00:00:00 GMT</pubDate>
      <description>&lt;span class="paragraphSection"&gt;&lt;div class="boxTitle"&gt;Abstract&lt;/div&gt;The oxidation resistance, carburization resistance, and mechanical properties of ethylene pyrolysis furnace tube alloys modified by Al/Al-W alloying were comparatively investigated with conventional alloys using various microstructural characterization techniques and mechanical property testing methods. The Al-alloyed 29Cr44Ni4AlNb+microalloy (MA) exhibits superior oxidation and carburization resistance compared to conventional 25Cr35NiNb+MA and 35Cr45NiNb+MA alloys; however, its creep rupture life was significantly reduced. Further addition of W enhanced the solid solution strengthening effect, thereby improving high-temperature tensile properties and mitigating the detrimental impact of Al on creep performance. The creep rupture life of the Al/W-modified 27Cr44Ni5W3Al+MA alloy reached levels comparable to those of conventional alloys while retaining the beneficial effects of Al in improving oxidation and carburization resistance. Through alloying strategies, this study successfully achieved a balance between corrosion resistance and mechanical properties in ethylene pyrolysis furnace tube alloys, enabling them to withstand their harsh service conditions effectively.&lt;/span&gt;</description>
      <prism:volume xmlns:prism="prism">148</prism:volume>
      <prism:number xmlns:prism="prism">4</prism:number>
      <prism:startingPage xmlns:prism="prism">041701</prism:startingPage>
      <prism:doi xmlns:prism="prism">10.1115/1.4071682</prism:doi>
      <guid>https://asmedigitalcollection.asme.org/pressurevesseltech/article/148/4/041701/1232556/Improved-Oxidation-Carburization-Resistance-and</guid>
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