The reason why razor blades become dull

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(1)I didn’t know there would be so many people on the internet who are serious about blades
(2)I posted it because I think people here will enjoy it
(3)A study published in the journal Science a few years ago about the dullness of a razor when shaving
(4)It is common knowledge that razors become dull as they use them, but steel on a razor blade is 50 times harder than hair, so why does steel lose
(5)I thought it was very strange when I was young, and I finally saw this paper
(6)I didn’t major in material engineering or mechanical engineering, so I read it roughly, so please understand
(7)You need to subscribe to Science to see the full text, but I’ll scratch the pictures that were released in the article
(8)The contents can also be viewed with the help of the school library subscription

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(1)A photograph of the team cutting hair with an electron microscope
(2)You can see that the edge is significantly cut even though it is the first time cutting with a new knife
(3)I haven’t found any released gifs, but if you cut the hair about six times, it goes beyond the edge being shaved and cracks completely and breaks like a toothless saw
(4)Of course, it’s an invisible microphone
(5)The researchers explain this phenomenon separately
(6)First, the blade is not uniform depending on the anisotropic direction of the iron knife material
(7)Particle structures are uneven, so the steel has different properties depending on its size
(8)It means that I can see it
(9)Simply put, the martensite structure is internally diverse
(10)It’s dirty and mixed
(11)Because it is a defective surface of the light metal crystal, it has weak properties
(12)It looks very strong and hard on a large scale that you can see
(13)at least a steel hand
(14)If you go to the micro-nano level, individual characteristics are different
(15)Degree scale contact may have local weaknesses
(16)Second, the fine chip and crack that occurred once completely cut the edge teeth into me
(17)a reason to go
(18)Computer simulations can be used to create condensation on a blade with fine cracks
(19)The result of analyzing the results of
(20)In the process of cutting hair, depending on the angle of the hair, not the direction of the blade, but the number
(21)It’s straight and it’s stuck on the sideTooth
(22)In a very narrow area of the k-side rack, enough to destroy steel is a huge amount
(23)I get stress
(24)And the steel is made up of two tough, soft grains
(25)When it occurs on the rack-specific head grate boundary, it is exceptionally prone to destruction
(26)Also found vulnerable
(27)Some of the contents are quoted below, so even if you speak English better than me
(28)If you know the ingredients well, it’s better to see it in person
(29)If you look at this, it’s a macroscopic method of destroying or scratching steel
(30)with the spirit of
(31)I can feel that it’s hard to judge a comprehensive blade
(32)Not only that, but the strength grain structure and composition are all involved
(33)That’s why
(34)Anyway, it’s not enough explanation, but I wrote it down because I wanted it to help

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