Charpy Impact Properties of Modified Tungsten Materials

Annealing temperature dependences of grain size along S direction of pure W and modified tungsten materials image

The ductile transfer temperature (DBTT) of modified tungsten materials can be evaluated by several test methods, such as tensile testing, bending testing, Charpy impact testing and fracture toughness testing. The DBTT is highly dependent on the test method, strain rate and specimen shape. Researchers have used Charpy impact and tensile tests to evaluate DBTT.

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Modified Tungsten Materials Inhibit Recrystallization

Annealing temperature dependences of Vickers hardness of pure W and modified tungsten materials image

An increase in deformation ratio of modified tungsten materials can produce relatively rapid microstructural recovery and is generally less resistant to recrystallization. In the present study, materials with higher deformation ratios showed slightly lower recrystallization temperatures compared to materials with lower deformation ratios having the same major chemical composition.

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China’s Domestic Rare Earth Market – May 29, 2023

neodymium oxide image

At the beginning of the week, China’s domestic rare earth market maintained a relatively strong operation. Under the mutual influence of positive and negative factors, the negotiation atmosphere between buyers and sellers was slightly stalemate. 

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China Tungsten Price Continued to Remain Stable in the Second Half of May 2023

tungsten acid image

Analysis of latest tungsten market from Chinatungsten Online

China tungsten price continued to remain stable in the week ended on Friday, May 26, 2023 as most market participants tended to stabilize the market after the release of long-term contract prices from listed tungsten enterprises. 

Read more: China Tungsten Price Continued to Remain Stable in the Second Half of May 2023

Sodium Molybdate Prices – May 29, 2023

molybdenum sheet image

Molybdenum market on May 29, 2023: At the beginning of the week, the overall Chinese molybdenum market was relatively optimistic, mainly due to the difficulty in increasing the supply of molybdenum raw materials and the increased enthusiasm of downstream users for inquiries and purchases. 

Read more: Sodium Molybdate Prices – May 29, 2023

 

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